diff --git a/CHANGELOG.md b/CHANGELOG.md
index 344b1341321..6c183ce93ee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+**Features**:
+
+- No longer write the deprecated `sentry.transaction` attribute. ([#6237](https://github.com/getsentry/relay/pull/6237))
+
 ## 26.7.0
 
 **Features**:
diff --git a/relay-event-normalization/src/eap/mod.rs b/relay-event-normalization/src/eap/mod.rs
index 363b0c17a3b..50f4d4bcf26 100644
--- a/relay-event-normalization/src/eap/mod.rs
+++ b/relay-event-normalization/src/eap/mod.rs
@@ -968,8 +968,6 @@ pub fn write_legacy_attributes(attributes: &mut Annotated<Attributes>) {
         (SERVER__ADDRESS, SENTRY__DOMAIN),
         (HTTP__REQUEST__METHOD, SENTRY__ACTION),
         (HTTP__RESPONSE__STATUS_CODE, SENTRY__STATUS_CODE),
-        // Transaction
-        (SENTRY__SEGMENT__NAME, SENTRY__TRANSACTION),
     ];
 
     for (current_attribute, legacy_attribute) in current_to_legacy_attributes {
diff --git a/relay-event-normalization/src/normalize/span/tag_extraction.rs b/relay-event-normalization/src/normalize/span/tag_extraction.rs
index 6945261e2ef..e46346c00cd 100644
--- a/relay-event-normalization/src/normalize/span/tag_extraction.rs
+++ b/relay-event-normalization/src/normalize/span/tag_extraction.rs
@@ -197,7 +197,6 @@ struct SharedTags {
     trace_status: Annotated<String>,
     transaction_method: Annotated<String>,
     transaction_op: Annotated<String>,
-    transaction: Annotated<String>,
     user_city: Annotated<String>,
     user_country_code: Annotated<String>,
     user_email: Annotated<String>,
@@ -229,7 +228,6 @@ impl SharedTags {
             trace_status,
             transaction_method,
             transaction_op,
-            transaction,
             user_city,
             user_country_code,
             user_email,
@@ -289,9 +287,6 @@ impl SharedTags {
         if tags.transaction_op.value().is_none() {
             tags.transaction_op = transaction_op.clone();
         };
-        if tags.transaction.value().is_none() {
-            tags.transaction = transaction.clone();
-        };
         if tags.user_city.value().is_none() {
             tags.user_city = user_city.clone();
         }
@@ -378,8 +373,6 @@ fn extract_shared_tags(event: &Event) -> SharedTags {
     }
 
     if let Some(transaction_name) = event.transaction.value() {
-        tags.transaction = transaction_name.clone().into();
-
         let transaction_method_from_request = event
             .request
             .value()
@@ -1057,13 +1050,6 @@ pub fn extract_tags(
             && ((span_op.starts_with("ui.interaction.") && measurements.contains_key("inp"))
                 || span_op.starts_with("ui.webvital."))
         {
-            if let Some(transaction) = span
-                .data
-                .value()
-                .and_then(|data| data.get_str(SENTRY__SEGMENT__NAME))
-            {
-                span_tags.transaction = transaction.to_owned().into();
-            }
             if let Some(user) = span.data.value().and_then(|data| data.get_str("user")) {
                 span_tags.user = user.to_owned().into();
             }
diff --git a/relay-event-schema/src/protocol/span.rs b/relay-event-schema/src/protocol/span.rs
index 0eb23bad490..51803d0c9fc 100644
--- a/relay-event-schema/src/protocol/span.rs
+++ b/relay-event-schema/src/protocol/span.rs
@@ -215,7 +215,6 @@ pub struct SentryTags {
     #[metastructure(pii = "true", field = "user.email")]
     pub user_email: Annotated<String>,
     pub environment: Annotated<String>,
-    pub transaction: Annotated<String>,
     #[metastructure(field = "transaction.method")]
     pub transaction_method: Annotated<String>,
     #[metastructure(field = "transaction.op")]
@@ -424,7 +423,6 @@ impl Getter for SentryTags {
             "trace.status" => &self.trace_status,
             "transaction.method" => &self.transaction_method,
             "transaction.op" => &self.transaction_op,
-            "transaction" => &self.transaction,
             "ttfd" => &self.ttfd,
             "ttid" => &self.ttid,
             "user.email" => &self.user_email,
diff --git a/tests/integration/test_ai.py b/tests/integration/test_ai.py
index b90b9636cc2..f01096fbaaf 100644
--- a/tests/integration/test_ai.py
+++ b/tests/integration/test_ai.py
@@ -432,7 +432,6 @@ def test_ai_spans_example_transaction(
                 "sentry.segment.name": {"type": "string", "value": "main"},
                 "sentry.status": {"type": "string", "value": "ok"},
                 "sentry.trace.status": {"type": "string", "value": "ok"},
-                "sentry.transaction": {"type": "string", "value": "main"},
                 "sentry.transaction.op": {
                     "type": "string",
                     "value": "gen_ai.invoke_agent",
@@ -557,7 +556,6 @@ def test_ai_spans_example_transaction(
                 "sentry.segment.name": {"type": "string", "value": "main"},
                 "sentry.status": {"type": "string", "value": "ok"},
                 "sentry.trace.status": {"type": "string", "value": "ok"},
-                "sentry.transaction": {"type": "string", "value": "main"},
                 "sentry.transaction.op": {
                     "type": "string",
                     "value": "gen_ai.invoke_agent",
@@ -670,7 +668,6 @@ def test_ai_spans_example_transaction(
                 "sentry.status": {"type": "string", "value": "ok"},
                 "sentry.status_code": {"type": "string", "value": "200"},
                 "sentry.trace.status": {"type": "string", "value": "ok"},
-                "sentry.transaction": {"type": "string", "value": "main"},
                 "sentry.transaction.op": {
                     "type": "string",
                     "value": "gen_ai.invoke_agent",
@@ -762,7 +759,6 @@ def test_ai_spans_example_transaction(
                 "sentry.segment.name": {"type": "string", "value": "main"},
                 "sentry.status": {"type": "string", "value": "ok"},
                 "sentry.trace.status": {"type": "string", "value": "ok"},
-                "sentry.transaction": {"type": "string", "value": "main"},
                 "sentry.transaction.op": {
                     "type": "string",
                     "value": "gen_ai.invoke_agent",
@@ -838,7 +834,6 @@ def test_ai_spans_example_transaction(
                 "sentry.status": {"type": "string", "value": "ok"},
                 "sentry.status_code": {"type": "string", "value": "200"},
                 "sentry.trace.status": {"type": "string", "value": "ok"},
-                "sentry.transaction": {"type": "string", "value": "main"},
                 "sentry.transaction.op": {
                     "type": "string",
                     "value": "gen_ai.invoke_agent",
@@ -923,7 +918,6 @@ def test_ai_spans_example_transaction(
                 "sentry.segment.name": {"type": "string", "value": "main"},
                 "sentry.status": {"type": "string", "value": "ok"},
                 "sentry.trace.status": {"type": "string", "value": "ok"},
-                "sentry.transaction": {"type": "string", "value": "main"},
                 "sentry.transaction.op": {
                     "type": "string",
                     "value": "gen_ai.invoke_agent",
@@ -999,7 +993,6 @@ def test_ai_spans_example_transaction(
                 "sentry.status": {"type": "string", "value": "ok"},
                 "sentry.status_code": {"type": "string", "value": "200"},
                 "sentry.trace.status": {"type": "string", "value": "ok"},
-                "sentry.transaction": {"type": "string", "value": "main"},
                 "sentry.transaction.op": {
                     "type": "string",
                     "value": "gen_ai.invoke_agent",
@@ -1115,7 +1108,6 @@ def test_ai_spans_example_transaction(
                 "sentry.segment.name": {"type": "string", "value": "main"},
                 "sentry.status": {"type": "string", "value": "ok"},
                 "sentry.trace.status": {"type": "string", "value": "ok"},
-                "sentry.transaction": {"type": "string", "value": "main"},
                 "sentry.transaction.op": {
                     "type": "string",
                     "value": "gen_ai.invoke_agent",
@@ -1225,7 +1217,6 @@ def test_ai_spans_example_transaction(
                 "sentry.status": {"type": "string", "value": "ok"},
                 "sentry.status_code": {"type": "string", "value": "200"},
                 "sentry.trace.status": {"type": "string", "value": "ok"},
-                "sentry.transaction": {"type": "string", "value": "main"},
                 "sentry.transaction.op": {
                     "type": "string",
                     "value": "gen_ai.invoke_agent",
@@ -1299,7 +1290,6 @@ def test_ai_spans_example_transaction(
                 "sentry.span.source": {"type": "string", "value": "custom"},
                 "sentry.status": {"type": "string", "value": "ok"},
                 "sentry.trace.status": {"type": "string", "value": "ok"},
-                "sentry.transaction": {"type": "string", "value": "main"},
                 "sentry.transaction.op": {
                     "type": "string",
                     "value": "gen_ai.invoke_agent",
diff --git a/tests/integration/test_spans.py b/tests/integration/test_spans.py
index 41dab0dadde..b377f85b293 100644
--- a/tests/integration/test_spans.py
+++ b/tests/integration/test_spans.py
@@ -152,7 +152,6 @@ def test_span_extraction(
                 "sentry.status": {"type": "string", "value": "ok"},
                 "sentry.segment.name": {"type": "string", "value": "hi"},
                 "sentry.trace.status": {"type": "string", "value": "ok"},
-                "sentry.transaction": {"type": "string", "value": "hi"},
                 "sentry.transaction.op": {"type": "string", "value": "hi"},
                 "sentry.user": {"type": "string", "value": f"id:{user_id}"},
                 "sentry.user.geo.city": {"type": "string", "value": "Vienna"},
@@ -245,7 +244,6 @@ def test_span_extraction(
                 "sentry.status": {"type": "string", "value": "ok"},
                 "sentry.segment.name": {"type": "string", "value": "hi"},
                 "sentry.trace.status": {"type": "string", "value": "ok"},
-                "sentry.transaction": {"type": "string", "value": "hi"},
                 "sentry.transaction.op": {"type": "string", "value": "hi"},
                 "sentry.user": {"type": "string", "value": f"id:{user_id}"},
                 "sentry.user.geo.city": {"type": "string", "value": "Vienna"},
@@ -336,7 +334,6 @@ def test_span_extraction(
             "sentry.status": {"type": "string", "value": "ok"},
             "sentry.trace.status": {"type": "string", "value": "ok"},
             "sentry.transaction.op": {"type": "string", "value": "hi"},
-            "sentry.transaction": {"type": "string", "value": "hi"},
             "sentry.user": {"type": "string", "value": f"id:{user_id}"},
             "sentry.user.geo.city": {"type": "string", "value": "Vienna"},
             "sentry.user.geo.country_code": {"type": "string", "value": "AT"},
diff --git a/tests/integration/test_spans_standalone.py b/tests/integration/test_spans_standalone.py
index b39cd3f9d97..e18466809ea 100644
--- a/tests/integration/test_spans_standalone.py
+++ b/tests/integration/test_spans_standalone.py
@@ -249,7 +249,6 @@ def test_lcp_span(
             "replay_id": None,
             "sentry.report_event": {"type": "string", "value": "navigation"},
             "sentry.segment.name": {"type": "string", "value": "/insights/projects/*"},
-            "sentry.transaction": {"type": "string", "value": "/insights/projects/*"},
             "transaction": None,
             "user_agent.original": {
                 "type": "string",
@@ -464,7 +463,6 @@ def test_cls_span(
             "replay_id": None,
             "sentry.report_event": {"type": "string", "value": "navigation"},
             "sentry.segment.name": {"type": "string", "value": "/insights/projects/*"},
-            "sentry.transaction": {"type": "string", "value": "/insights/projects/*"},
             "transaction": None,
             "user_agent.original": {
                 "type": "string",
@@ -653,7 +651,6 @@ def test_inp_span(
             },
             "replay_id": None,
             "sentry.segment.name": {"type": "string", "value": "/insights/projects/*"},
-            "sentry.transaction": {"type": "string", "value": "/insights/projects/*"},
             "transaction": None,
             "user_agent.original": {
                 "type": "string",
@@ -1019,7 +1016,6 @@ def test_ua_ip_inference(
             "replay_id": None,
             "sentry.report_event": {"type": "string", "value": "navigation"},
             "sentry.segment.name": {"type": "string", "value": "/insights/projects/"},
-            "sentry.transaction": {"type": "string", "value": "/insights/projects/"},
             "transaction": None,
             "user_agent.original": {
                 "type": "string",
diff --git a/tests/integration/test_spansv2.py b/tests/integration/test_spansv2.py
index eee7bd6a9a0..920f7d785c1 100644
--- a/tests/integration/test_spansv2.py
+++ b/tests/integration/test_spansv2.py
@@ -2019,10 +2019,6 @@ def test_spansv2_lcp_segment(mini_sentry, relay_with_processing, spans_consumer)
                 "type": "string",
                 "value": "a84cb30362883928",
             },
-            "sentry.transaction": {
-                "type": "string",
-                "value": "/issues/",
-            },
             "user_agent.original": {
                 "type": "string",
                 "value": "RelayIntegrationTests/1.0.0 Firefox/42.0",
diff --git a/tests/integration/test_spansv2_otel.py b/tests/integration/test_spansv2_otel.py
index b3516cba0d9..5af0ba0e544 100644
--- a/tests/integration/test_spansv2_otel.py
+++ b/tests/integration/test_spansv2_otel.py
@@ -270,7 +270,6 @@ def test_span_ingestion(
             "sentry.relay.pipeline": {"type": "string", "value": "span_v2"},
             "sentry.segment.id": {"type": "string", "value": "f0b809703e783d00"},
             "sentry.segment.name": {"type": "string", "value": "A Proto Span"},
-            "sentry.transaction": {"type": "string", "value": "A Proto Span"},
             "sentry.kind": {"type": "string", "value": "server"},
             "ui.component_name": {"type": "string", "value": "MyComponent"},
         },