diff --git a/src/sentry/api/endpoints/organization_details.py b/src/sentry/api/endpoints/organization_details.py
index f6f7d96c9ccac7..12590d53dbaa42 100644
--- a/src/sentry/api/endpoints/organization_details.py
+++ b/src/sentry/api/endpoints/organization_details.py
@@ -50,6 +50,7 @@
     GITHUB_COMMENT_BOT_DEFAULT,
     GITLAB_COMMENT_BOT_DEFAULT,
     HIDE_AI_FEATURES_DEFAULT,
+    INGEST_THROUGH_TRUSTED_RELAYS_ONLY_DEFAULT,
     ISSUE_ALERTS_THREAD_DEFAULT,
     JOIN_REQUESTS_DEFAULT,
     LEGACY_RATE_LIMIT_OPTIONS,
@@ -108,7 +109,6 @@
 ERR_SSO_ENABLED = "Cannot require two-factor authentication with SSO enabled"
 ERR_3RD_PARTY_PUBLISHED_APP = "Cannot delete an organization that owns a published integration. Contact support if you need assistance."
 ERR_PLAN_REQUIRED = "A paid plan is required to enable this feature."
-
 ORG_OPTIONS = (
     # serializer field name, option key name, type, default value
     (
@@ -235,6 +235,12 @@
         str,
         DEFAULT_AUTOFIX_AUTOMATION_TUNING_DEFAULT,
     ),
+    (
+        "ingestThroughTrustedRelaysOnly",
+        "sentry:ingest-through-trusted-relays-only",
+        bool,
+        INGEST_THROUGH_TRUSTED_RELAYS_ONLY_DEFAULT,
+    ),
 )
 
 DELETION_STATUSES = frozenset(
@@ -302,6 +308,7 @@ class OrganizationSerializer(BaseOrganizationSerializer):
         required=False,
         help_text="The default automation tuning setting for new projects.",
     )
+    ingestThroughTrustedRelaysOnly = serializers.BooleanField(required=False)
 
     @cached_property
     def _has_legacy_rate_limits(self):
@@ -377,6 +384,18 @@ def validate_trustedRelays(self, value):
 
         return value
 
+    def validate_ingestThroughTrustedRelaysOnly(self, value):
+        organization = self.context["organization"]
+        request = self.context["request"]
+        if not features.has(
+            "organizations:ingest-through-trusted-relays-only", organization, actor=request.user
+        ):
+            # NOTE (vgrozdanic): For now allow access to this setting only to orgs with the feature flag enabled
+            raise serializers.ValidationError(
+                "Organization does not have the ingest through trusted relays only feature enabled."
+            )
+        return value
+
     def validate_accountRateLimit(self, value):
         if not self._has_legacy_rate_limits:
             raise serializers.ValidationError(
@@ -659,6 +678,7 @@ def post_org_pending_deletion(
         "apdexThreshold",
         "genAIConsent",
         "defaultAutofixAutomationTuning",
+        "ingestThroughTrustedRelaysOnly",
     ]
 )
 class OrganizationDetailsPutSerializer(serializers.Serializer):
diff --git a/src/sentry/api/serializers/models/organization.py b/src/sentry/api/serializers/models/organization.py
index fdcd615114c7b0..9eefe400c23000 100644
--- a/src/sentry/api/serializers/models/organization.py
+++ b/src/sentry/api/serializers/models/organization.py
@@ -39,6 +39,7 @@
     GITHUB_COMMENT_BOT_DEFAULT,
     GITLAB_COMMENT_BOT_DEFAULT,
     HIDE_AI_FEATURES_DEFAULT,
+    INGEST_THROUGH_TRUSTED_RELAYS_ONLY_DEFAULT,
     ISSUE_ALERTS_THREAD_DEFAULT,
     JOIN_REQUESTS_DEFAULT,
     METRIC_ALERTS_THREAD_DEFAULT,
@@ -513,6 +514,7 @@ class _DetailedOrganizationSerializerResponseOptional(OrganizationSerializerResp
     effectiveSampleRate: float
     planSampleRate: float
     desiredSampleRate: float
+    ingestThroughTrustedRelaysOnly: bool
 
 
 @extend_schema_serializer(exclude_fields=["availableRoles"])
@@ -732,6 +734,12 @@ def serialize(  # type: ignore[explicit-override, override]
                 obj.get_option("sentry:sampling_mode", SAMPLING_MODE_DEFAULT)
             )
 
+        if features.has("organizations:ingest-through-trusted-relays-only", obj):
+            context["ingestThroughTrustedRelaysOnly"] = obj.get_option(
+                "sentry:ingest-through-trusted-relays-only",
+                INGEST_THROUGH_TRUSTED_RELAYS_ONLY_DEFAULT,
+            )
+
         if access.role is not None:
             context["role"] = access.role  # Deprecated
             context["orgRole"] = access.role
@@ -765,6 +773,7 @@ def serialize(  # type: ignore[explicit-override, override]
         "quota",
         "rollbackEnabled",
         "streamlineOnly",
+        "ingestThroughTrustedRelaysOnly",
     ]
 )
 class DetailedOrganizationSerializerWithProjectsAndTeamsResponse(
diff --git a/src/sentry/constants.py b/src/sentry/constants.py
index a25022594096de..76b072c32dbfcc 100644
--- a/src/sentry/constants.py
+++ b/src/sentry/constants.py
@@ -722,6 +722,7 @@ class InsightModules(Enum):
 SAMPLING_MODE_DEFAULT = "organization"
 ROLLBACK_ENABLED_DEFAULT = True
 DEFAULT_AUTOFIX_AUTOMATION_TUNING_DEFAULT = "off"
+INGEST_THROUGH_TRUSTED_RELAYS_ONLY_DEFAULT = False
 
 # `sentry:events_member_admin` - controls whether the 'member' role gets the event:admin scope
 EVENTS_MEMBER_ADMIN_DEFAULT = True
diff --git a/tests/sentry/api/endpoints/test_organization_details.py b/tests/sentry/api/endpoints/test_organization_details.py
index cdd5fde8125de2..88cb17fb8480ad 100644
--- a/tests/sentry/api/endpoints/test_organization_details.py
+++ b/tests/sentry/api/endpoints/test_organization_details.py
@@ -1275,6 +1275,28 @@ def test_target_sample_rate_feature(self):
             data = {"targetSampleRate": 0.1}
             self.get_error_response(self.organization.slug, status_code=400, **data)
 
+    def test_ingest_through_trusted_relays_only_option(self):
+        # by default option is not set
+        assert not self.organization.get_option("sentry:ingest_through_trusted_relays_only")
+
+        with self.feature("organizations:ingest-through-trusted-relays-only"):
+            data = {"ingestThroughTrustedRelaysOnly": True}
+            self.get_success_response(self.organization.slug, **data)
+            assert self.organization.get_option("sentry:ingest-through-trusted-relays-only")
+
+        with self.feature({"organizations:ingest-through-trusted-relays-only": False}):
+            data = {"ingestThroughTrustedRelaysOnly": True}
+            self.get_error_response(self.organization.slug, status_code=400, **data)
+
+    @with_feature("organizations:ingest-through-trusted-relays-only")
+    def test_get_ingest_through_trusted_relays_only_option(self):
+        response = self.get_success_response(self.organization.slug)
+        assert response.data["ingestThroughTrustedRelaysOnly"] is False
+
+    def test_get_ingest_through_trusted_relays_only_option_without_feature(self):
+        response = self.get_success_response(self.organization.slug)
+        assert "ingestThroughTrustedRelaysOnly" not in response.data
+
     @with_feature("organizations:dynamic-sampling-custom")
     def test_target_sample_rate_range(self):
         # low, within and high