diff --git a/compiler/fir/checkers/checkers-component-generator/src/org/jetbrains/kotlin/fir/checkers/generator/diagnostics/FirDiagnosticsList.kt b/compiler/fir/checkers/checkers-component-generator/src/org/jetbrains/kotlin/fir/checkers/generator/diagnostics/FirDiagnosticsList.kt
index 1bdb0a2532e..8cc23620c9e 100644
--- a/compiler/fir/checkers/checkers-component-generator/src/org/jetbrains/kotlin/fir/checkers/generator/diagnostics/FirDiagnosticsList.kt
+++ b/compiler/fir/checkers/checkers-component-generator/src/org/jetbrains/kotlin/fir/checkers/generator/diagnostics/FirDiagnosticsList.kt
@@ -161,6 +161,7 @@ object DIAGNOSTICS_LIST : DiagnosticList() {
         val DEPRECATED_SINCE_KOTLIN_WITHOUT_ARGUMENTS by error<PsiElement>()
         val DEPRECATED_SINCE_KOTLIN_WITHOUT_DEPRECATED by error<PsiElement>()
         val DEPRECATED_SINCE_KOTLIN_WITH_DEPRECATED_LEVEL by error<PsiElement>()
+        val DEPRECATED_SINCE_KOTLIN_OUTSIDE_KOTLIN_SUBPACKAGE by error<PsiElement>()
     }
 
     val EXPOSED_VISIBILITY by object : DiagnosticGroup("Exposed visibility") {
diff --git a/compiler/fir/checkers/gen/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrors.kt b/compiler/fir/checkers/gen/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrors.kt
index b985e64e98f..d5fa41b192e 100644
--- a/compiler/fir/checkers/gen/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrors.kt
+++ b/compiler/fir/checkers/gen/org/jetbrains/kotlin/fir/analysis/diagnostics/FirErrors.kt
@@ -167,6 +167,7 @@ object FirErrors {
     val DEPRECATED_SINCE_KOTLIN_WITHOUT_ARGUMENTS by error0<PsiElement>()
     val DEPRECATED_SINCE_KOTLIN_WITHOUT_DEPRECATED by error0<PsiElement>()
     val DEPRECATED_SINCE_KOTLIN_WITH_DEPRECATED_LEVEL by error0<PsiElement>()
+    val DEPRECATED_SINCE_KOTLIN_OUTSIDE_KOTLIN_SUBPACKAGE by error0<PsiElement>()
 
     // Exposed visibility
     val EXPOSED_TYPEALIAS_EXPANDED_TYPE by error3<KtNamedDeclaration, EffectiveVisibility, FirMemberDeclaration, EffectiveVisibility>(SourceElementPositioningStrategies.DECLARATION_NAME)
diff --git a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirAnnotationChecker.kt b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirAnnotationChecker.kt
index 18552043d7f..b14e73f336d 100644
--- a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirAnnotationChecker.kt
+++ b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirAnnotationChecker.kt
@@ -6,10 +6,12 @@
 package org.jetbrains.kotlin.fir.analysis.checkers.declaration
 
 import org.jetbrains.kotlin.fir.analysis.checkers.context.CheckerContext
+import org.jetbrains.kotlin.fir.analysis.checkers.context.findClosest
 import org.jetbrains.kotlin.fir.analysis.diagnostics.DiagnosticReporter
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors
 import org.jetbrains.kotlin.fir.analysis.diagnostics.reportOn
 import org.jetbrains.kotlin.fir.declarations.FirAnnotatedDeclaration
+import org.jetbrains.kotlin.fir.declarations.FirFile
 import org.jetbrains.kotlin.fir.expressions.FirAnnotationCall
 import org.jetbrains.kotlin.fir.expressions.argumentMapping
 import org.jetbrains.kotlin.fir.resolve.fqName
@@ -37,6 +39,18 @@ object FirAnnotationChecker : FirAnnotatedDeclarationChecker() {
         }
 
         if (deprecatedSinceKotlinCall != null) {
+            val closestFirFile = context.findClosest<FirFile>()
+            if (closestFirFile != null) {
+                val packageName = closestFirFile.packageFqName.asString()
+                if (packageName != "kotlin" && !packageName.startsWith("kotlin.")) {
+                    reporter.reportOn(
+                        deprecatedSinceKotlinCall.source,
+                        FirErrors.DEPRECATED_SINCE_KOTLIN_OUTSIDE_KOTLIN_SUBPACKAGE,
+                        context
+                    )
+                }
+            }
+
             if (deprecatedCall == null) {
                 reporter.reportOn(deprecatedSinceKotlinCall.source, FirErrors.DEPRECATED_SINCE_KOTLIN_WITHOUT_DEPRECATED, context)
             } else {
diff --git a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirDefaultErrorMessages.kt b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirDefaultErrorMessages.kt
index aae6ed265fa..91570fa5501 100644
--- a/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirDefaultErrorMessages.kt
+++ b/compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/diagnostics/FirDefaultErrorMessages.kt
@@ -86,6 +86,7 @@ import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors.DELEGATE_SPECIAL_
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors.DELEGATION_IN_INTERFACE
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors.DELEGATION_SUPER_CALL_IN_ENUM_CONSTRUCTOR
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors.DEPRECATED_MODIFIER_PAIR
+import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors.DEPRECATED_SINCE_KOTLIN_OUTSIDE_KOTLIN_SUBPACKAGE
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors.DEPRECATED_SINCE_KOTLIN_WITHOUT_ARGUMENTS
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors.DEPRECATED_SINCE_KOTLIN_WITHOUT_DEPRECATED
 import org.jetbrains.kotlin.fir.analysis.diagnostics.FirErrors.DEPRECATED_SINCE_KOTLIN_WITH_DEPRECATED_LEVEL
@@ -448,6 +449,10 @@ class FirDefaultErrorMessages : DefaultErrorMessages.Extension {
                 DEPRECATED_SINCE_KOTLIN_WITH_DEPRECATED_LEVEL,
                 "DeprecatedSinceKotlin annotation can be used only with unspecified deprecation level of Deprecated annotation"
             )
+            map.put(
+                DEPRECATED_SINCE_KOTLIN_OUTSIDE_KOTLIN_SUBPACKAGE,
+                "DeprecatedSinceKotlin annotation cannot be used outside 'kotlin' subpackages"
+            )
 
             // Exposed visibility group // #
             map.put(
diff --git a/compiler/testData/diagnostics/tests/deprecated/deprecatedSinceKotlin/deprecatedSinceKotlinOutsideKotlinPackage.fir.kt b/compiler/testData/diagnostics/tests/deprecated/deprecatedSinceKotlin/deprecatedSinceKotlinOutsideKotlinPackage.fir.kt
index 3e7f2c987bb..dc58d5d0808 100644
--- a/compiler/testData/diagnostics/tests/deprecated/deprecatedSinceKotlin/deprecatedSinceKotlinOutsideKotlinPackage.fir.kt
+++ b/compiler/testData/diagnostics/tests/deprecated/deprecatedSinceKotlin/deprecatedSinceKotlinOutsideKotlinPackage.fir.kt
@@ -1,5 +1,5 @@
 package foo.bar
 
 @Deprecated("")
-@DeprecatedSinceKotlin("1.3")
-fun test() {}
\ No newline at end of file
+<!DEPRECATED_SINCE_KOTLIN_OUTSIDE_KOTLIN_SUBPACKAGE!>@DeprecatedSinceKotlin("1.3")<!>
+fun test() {}
diff --git a/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDataClassConverters.kt b/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDataClassConverters.kt
index 2eed107629a..0bfaee736b7 100644
--- a/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDataClassConverters.kt
+++ b/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDataClassConverters.kt
@@ -551,6 +551,12 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.DEPRECATED_SINCE_KOTLIN_OUTSIDE_KOTLIN_SUBPACKAGE) { firDiagnostic ->
+        DeprecatedSinceKotlinOutsideKotlinSubpackageImpl(
+            firDiagnostic as FirPsiDiagnostic<*>,
+            token,
+        )
+    }
     add(FirErrors.EXPOSED_TYPEALIAS_EXPANDED_TYPE) { firDiagnostic ->
         ExposedTypealiasExpandedTypeImpl(
             firDiagnostic.a,
diff --git a/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnostics.kt b/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnostics.kt
index 4ddc8330f2b..2ae1a492407 100644
--- a/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnostics.kt
+++ b/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnostics.kt
@@ -396,6 +396,10 @@ sealed class KtFirDiagnostic<PSI: PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = DeprecatedSinceKotlinWithDeprecatedLevel::class
     }
 
+    abstract class DeprecatedSinceKotlinOutsideKotlinSubpackage : KtFirDiagnostic<PsiElement>() {
+        override val diagnosticClass get() = DeprecatedSinceKotlinOutsideKotlinSubpackage::class
+    }
+
     abstract class ExposedTypealiasExpandedType : KtFirDiagnostic<KtNamedDeclaration>() {
         override val diagnosticClass get() = ExposedTypealiasExpandedType::class
         abstract val elementVisibility: EffectiveVisibility
diff --git a/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnosticsImpl.kt b/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnosticsImpl.kt
index 12c419ecb71..9bb5a4fcb6d 100644
--- a/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnosticsImpl.kt
+++ b/idea/idea-frontend-fir/src/org/jetbrains/kotlin/idea/frontend/api/fir/diagnostics/KtFirDiagnosticsImpl.kt
@@ -640,6 +640,13 @@ internal class DeprecatedSinceKotlinWithDeprecatedLevelImpl(
     override val firDiagnostic: FirPsiDiagnostic<*> by weakRef(firDiagnostic)
 }
 
+internal class DeprecatedSinceKotlinOutsideKotlinSubpackageImpl(
+    firDiagnostic: FirPsiDiagnostic<*>,
+    override val token: ValidityToken,
+) : KtFirDiagnostic.DeprecatedSinceKotlinOutsideKotlinSubpackage(), KtAbstractFirDiagnostic<PsiElement> {
+    override val firDiagnostic: FirPsiDiagnostic<*> by weakRef(firDiagnostic)
+}
+
 internal class ExposedTypealiasExpandedTypeImpl(
     override val elementVisibility: EffectiveVisibility,
     override val restrictingDeclaration: KtSymbol,