diff --git a/CHANGELOG.md b/CHANGELOG.md
index af426809518..ca9d3a7582a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 **Features**:
 
 - Extend cookie scrubbing to response cookies. ([#6391](https://github.com/getsentry/relay/pull/6391))
+- Scrub numbered variants of sensitive cookies. ([#6392](https://github.com/getsentry/relay/pull/6392))
 
 **Internal**:
 
diff --git a/relay-pii/src/convert.rs b/relay-pii/src/convert.rs
index b9c9e1fcc61..0327f7b4d08 100644
--- a/relay-pii/src/convert.rs
+++ b/relay-pii/src/convert.rs
@@ -1698,7 +1698,7 @@ THd+9FBxiHLGXNKhG/FRSyREXEt+NyYIf/0cyByc9tNksat794ddUqnLOg0vwSkv
               "contexts": {
                   "trace": {
                     "data": {
-                        "http.request.header.cookie": "baz=quux; session=foobar; language=en; csrf=u32t4o3tb3gg43; foo=bar",
+                        "http.request.header.cookie": "baz=quux; session__0=foobar; language=en; csrf=u32t4o3tb3gg43; foo=bar",
                         "http.request.header.cookie.sentrysid": "foobar",
                         "http.request.header.cookie.sudo": "foobar",
                         "http.request.header.cookie.su": "foobar",
@@ -1752,7 +1752,7 @@ THd+9FBxiHLGXNKhG/FRSyREXEt+NyYIf/0cyByc9tNksat794ddUqnLOg0vwSkv
               },
               "spans": [{
                 "data": {
-                    "http.request.header.cookie": "baz=quux; session=foobar; language=en; csrf=u32t4o3tb3gg43; foo=bar",
+                    "http.request.header.cookie": "baz=quux; session__0=foobar; language=en; csrf=u32t4o3tb3gg43; foo=bar",
                     "http.request.header.cookie.sentrysid": "foobar",
                     "http.request.header.cookie.sudo": "foobar",
                     "http.request.header.cookie.su": "foobar",
@@ -1817,7 +1817,7 @@ THd+9FBxiHLGXNKhG/FRSyREXEt+NyYIf/0cyByc9tNksat794ddUqnLOg0vwSkv
         let mut data = SpanV2::from_value(
             serde_json::json!({
               "attributes": {
-                "http.request.header.cookie": {"value": ["baz=quux", "session=foobar", "language=en", "csrf=u32t4o3tb3gg43", "foo=bar"]},
+                "http.request.header.cookie": {"value": ["baz=quux", "session__0=foobar", "language=en", "csrf=u32t4o3tb3gg43", "foo=bar"]},
                 "http.request.header.cookie.sentrysid": {"value": "foobar"},
                 "http.request.header.cookie.sudo": {"value": "foobar"},
                 "http.request.header.cookie.su": {"value": "foobar"},
diff --git a/relay-pii/src/regexes.rs b/relay-pii/src/regexes.rs
index 5de75902205..77e7e88977d 100644
--- a/relay-pii/src/regexes.rs
+++ b/relay-pii/src/regexes.rs
@@ -175,7 +175,7 @@ pub static SENSITIVE_COOKIE_NAMES: &[&str] = &[
 
 static COOKIE_REGEX: LazyLock<Regex> = LazyLock::new(|| {
     let variants = SENSITIVE_COOKIE_NAMES.join("|");
-    let r = format!("(?i)\\b(?:{variants})=([^;]+)");
+    let r = format!("(?i)\\b(?:(?:{variants})(?:__\\d+)?)=([^;]+)");
     Regex::new(&r).unwrap()
 });
 
diff --git a/relay-pii/src/snapshots/relay_pii__convert__tests__span_cookie.snap b/relay-pii/src/snapshots/relay_pii__convert__tests__span_cookie.snap
index 30bd8cfb1a8..f85e50e96f9 100644
--- a/relay-pii/src/snapshots/relay_pii__convert__tests__span_cookie.snap
+++ b/relay-pii/src/snapshots/relay_pii__convert__tests__span_cookie.snap
@@ -6,7 +6,7 @@ expression: data
   "contexts": {
     "trace": {
       "data": {
-        "http.request.header.cookie": "baz=quux; session=[Filtered]; language=en; csrf=[Filtered]; foo=bar",
+        "http.request.header.cookie": "baz=quux; session__0=[Filtered]; language=en; csrf=[Filtered]; foo=bar",
         "http.request.header.cookie.__session": "[Filtered]",
         "http.request.header.cookie._csrf": "[Filtered]",
         "http.request.header.cookie._iris_csrf": "[Filtered]",
@@ -61,7 +61,7 @@ expression: data
   "spans": [
     {
       "data": {
-        "http.request.header.cookie": "baz=quux; session=[Filtered]; language=en; csrf=[Filtered]; foo=bar",
+        "http.request.header.cookie": "baz=quux; session__0=[Filtered]; language=en; csrf=[Filtered]; foo=bar",
         "http.request.header.cookie.__session": "[Filtered]",
         "http.request.header.cookie._csrf": "[Filtered]",
         "http.request.header.cookie._iris_csrf": "[Filtered]",
@@ -122,17 +122,17 @@ expression: data
                 [
                   "@cookies:filter",
                   "s",
-                  18,
-                  28
+                  21,
+                  31
                 ],
                 [
                   "@cookies:filter",
                   "s",
-                  48,
-                  58
+                  51,
+                  61
                 ]
               ],
-              "len": 67
+              "len": 70
             }
           },
           "http.request.header.cookie.__session": {
@@ -738,17 +738,17 @@ expression: data
                 [
                   "@cookies:filter",
                   "s",
-                  18,
-                  28
+                  21,
+                  31
                 ],
                 [
                   "@cookies:filter",
                   "s",
-                  48,
-                  58
+                  51,
+                  61
                 ]
               ],
-              "len": 67
+              "len": 70
             }
           },
           "http.request.header.cookie.__session": {
diff --git a/relay-pii/src/snapshots/relay_pii__convert__tests__span_v2_cookie.snap b/relay-pii/src/snapshots/relay_pii__convert__tests__span_v2_cookie.snap
index 1c884925732..de897aa5408 100644
--- a/relay-pii/src/snapshots/relay_pii__convert__tests__span_v2_cookie.snap
+++ b/relay-pii/src/snapshots/relay_pii__convert__tests__span_v2_cookie.snap
@@ -7,7 +7,7 @@ expression: data
     "http.request.header.cookie": {
       "value": [
         "baz=quux",
-        "session=[Filtered]",
+        "session__0=[Filtered]",
         "language=en",
         "csrf=[Filtered]",
         "foo=bar"
@@ -171,11 +171,11 @@ expression: data
                 [
                   "@cookies:filter",
                   "s",
-                  8,
-                  18
+                  11,
+                  21
                 ]
               ],
-              "len": 14
+              "len": 17
             }
           },
           "3": {