diff --git a/platform/platform-impl/src/com/intellij/ide/lightEdit/project/LightEditProjectFileIndex.java b/platform/platform-impl/src/com/intellij/ide/lightEdit/project/LightEditProjectFileIndex.java
index 8e5d55df6e1c..87034c923ee5 100644
--- a/platform/platform-impl/src/com/intellij/ide/lightEdit/project/LightEditProjectFileIndex.java
+++ b/platform/platform-impl/src/com/intellij/ide/lightEdit/project/LightEditProjectFileIndex.java
@@ -8,8 +8,10 @@ import com.intellij.openapi.roots.ProjectFileIndex;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.openapi.vfs.VirtualFileFilter;
 import com.intellij.platform.workspace.jps.entities.LibraryEntity;
+import com.intellij.platform.workspace.jps.entities.SdkEntity;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import org.jetbrains.annotations.Unmodifiable;
 import org.jetbrains.jps.model.module.JpsModuleSourceRootType;
 
 import java.util.Collection;
@@ -103,6 +105,11 @@ final class LightEditProjectFileIndex implements ProjectFileIndex {
     return Collections.emptyList();
   }
 
+  @Override
+  public @NotNull @Unmodifiable Collection<@NotNull SdkEntity> findContainingSdks(@NotNull VirtualFile fileOrDir) {
+    return Collections.emptyList();
+  }
+
   @Override
   public boolean isExcluded(@NotNull VirtualFile file) {
     return false;
diff --git a/platform/platform-tests/testSrc/com/intellij/openapi/roots/impl/SdkInProjectFileIndexTest.kt b/platform/platform-tests/testSrc/com/intellij/openapi/roots/impl/SdkInProjectFileIndexTest.kt
index 966c2683630d..069b8eea0184 100644
--- a/platform/platform-tests/testSrc/com/intellij/openapi/roots/impl/SdkInProjectFileIndexTest.kt
+++ b/platform/platform-tests/testSrc/com/intellij/openapi/roots/impl/SdkInProjectFileIndexTest.kt
@@ -16,6 +16,8 @@ import com.intellij.openapi.roots.impl.ProjectFileIndexScopes.NOT_IN_PROJECT
 import com.intellij.openapi.roots.impl.ProjectFileIndexScopes.assertScope
 import com.intellij.openapi.util.registry.Registry
 import com.intellij.openapi.vfs.VirtualFile
+import com.intellij.platform.testFramework.assertion.collectionAssertion.CollectionAssertions.assertEmpty
+import com.intellij.platform.testFramework.assertion.collectionAssertion.CollectionAssertions.assertEqualsUnordered
 import com.intellij.testFramework.junit5.RunInEdt
 import com.intellij.testFramework.junit5.TestApplication
 import com.intellij.testFramework.rules.ProjectModelExtension
@@ -23,6 +25,7 @@ import com.intellij.testFramework.rules.TempDirectoryExtension
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.extension.RegisterExtension
+import kotlin.test.assertEquals
 
 @TestApplication
 @RunInEdt(writeIntent = true)
@@ -60,11 +63,30 @@ class SdkInProjectFileIndexTest {
       it.addRoot(sdkSourcesRoot, OrderRootType.SOURCES)
       it.addRoot(sdkDocRoot, OrderRootType.DOCUMENTATION)
     }
+    assertEmpty(fileIndex.findContainingSdks(sdkRoot))
     ModuleRootModificationUtil.setModuleSdk(module, sdk)
     
     fileIndex.assertScope(sdkRoot, IN_LIBRARY)
     fileIndex.assertScope(sdkSourcesRoot, IN_LIBRARY or IN_SOURCE)
     fileIndex.assertScope(sdkDocRoot, NOT_IN_PROJECT)
+    assertEquals(sdk.name, fileIndex.findContainingSdks(sdkRoot).single().name)
+    assertEquals(sdk.name, fileIndex.findContainingSdks(sdkSourcesRoot).single().name)
+    assertEmpty(fileIndex.findContainingSdks(sdkDocRoot))
+  }
+
+  @Test
+  fun `two sdk with same root`() {
+    val sdk1 = projectModel.addSdk("sdk1") {
+      it.addRoot(sdkRoot, OrderRootType.CLASSES)
+    }
+    val sdk2 = projectModel.addSdk("sdk2") {
+      it.addRoot(sdkRoot, OrderRootType.CLASSES)
+    }
+    val module2 = projectModel.createModule("module2")
+    ModuleRootModificationUtil.setModuleSdk(module, sdk1)
+    assertEquals("sdk1", fileIndex.findContainingSdks(sdkRoot).single().name)
+    ModuleRootModificationUtil.setModuleSdk(module2, sdk2)
+    assertEqualsUnordered(listOf("sdk1", "sdk2"), fileIndex.findContainingSdks(sdkRoot).map { it.name })
   }
 
   @Test
diff --git a/platform/projectModel-api/api-dump-experimental.txt b/platform/projectModel-api/api-dump-experimental.txt
index d5910e9fd48c..5cf7a7bbfbbc 100644
--- a/platform/projectModel-api/api-dump-experimental.txt
+++ b/platform/projectModel-api/api-dump-experimental.txt
@@ -47,6 +47,7 @@ com.intellij.openapi.roots.OrderRootsEnumerator
 com.intellij.openapi.roots.ProjectFileIndex
 - com.intellij.openapi.roots.FileIndex
 - *a:findContainingLibraries(com.intellij.openapi.vfs.VirtualFile):java.util.Collection
+- *a:findContainingSdks(com.intellij.openapi.vfs.VirtualFile):java.util.Collection
 - *a:getModulesForFile(com.intellij.openapi.vfs.VirtualFile,Z):java.util.Set
 *:com.intellij.openapi.roots.ProjectModelElement
 - *a:getExternalSource():com.intellij.openapi.roots.ProjectModelExternalSource
diff --git a/platform/projectModel-api/src/com/intellij/openapi/roots/ProjectFileIndex.java b/platform/projectModel-api/src/com/intellij/openapi/roots/ProjectFileIndex.java
index f6fbbb7f8eac..550db59ad97c 100644
--- a/platform/projectModel-api/src/com/intellij/openapi/roots/ProjectFileIndex.java
+++ b/platform/projectModel-api/src/com/intellij/openapi/roots/ProjectFileIndex.java
@@ -6,6 +6,7 @@ import com.intellij.openapi.module.Module;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.platform.workspace.jps.entities.LibraryEntity;
+import com.intellij.platform.workspace.jps.entities.SdkEntity;
 import com.intellij.util.concurrency.annotations.RequiresReadLock;
 import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
@@ -188,6 +189,12 @@ public interface ProjectFileIndex extends FileIndex {
   @ApiStatus.Experimental
   @NotNull @Unmodifiable Collection<@NotNull LibraryEntity> findContainingLibraries(@NotNull VirtualFile fileOrDir);
 
+  /**
+   * Returns SDKs used in the project which have {@code fileOrDir} under their classes or source roots.
+   */
+  @ApiStatus.Experimental
+  @NotNull @Unmodifiable Collection<@NotNull SdkEntity> findContainingSdks(@NotNull VirtualFile fileOrDir);
+
   /**
    * Checks if the specified file or directory is located under project roots but the file itself or one of its parent directories is ignored
    * by {@link FileTypeRegistry#isFileIgnored(VirtualFile)}).
diff --git a/platform/projectModel-impl/src/com/intellij/openapi/roots/impl/ProjectFileIndexImpl.java b/platform/projectModel-impl/src/com/intellij/openapi/roots/impl/ProjectFileIndexImpl.java
index c69e1480497b..d9c37c7374bc 100644
--- a/platform/projectModel-impl/src/com/intellij/openapi/roots/impl/ProjectFileIndexImpl.java
+++ b/platform/projectModel-impl/src/com/intellij/openapi/roots/impl/ProjectFileIndexImpl.java
@@ -11,6 +11,7 @@ import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.openapi.vfs.VirtualFileFilter;
 import com.intellij.platform.backend.workspace.WorkspaceModel;
 import com.intellij.platform.workspace.jps.entities.LibraryEntity;
+import com.intellij.platform.workspace.jps.entities.SdkEntity;
 import com.intellij.platform.workspace.storage.ImmutableEntityStorage;
 import com.intellij.util.SmartList;
 import com.intellij.util.containers.ContainerUtil;
@@ -23,6 +24,7 @@ import kotlin.Pair;
 import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import org.jetbrains.annotations.Unmodifiable;
 import org.jetbrains.jps.model.module.JpsModuleSourceRootType;
 
 import java.util.*;
@@ -78,6 +80,11 @@ public class ProjectFileIndexImpl extends FileIndexBase implements ProjectFileIn
     return myWorkspaceFileIndex.findContainingEntities(fileOrDir, LibraryEntity.class, true, false, false, true, true, false);
   }
 
+  @Override
+  public @NotNull @Unmodifiable Collection<@NotNull SdkEntity> findContainingSdks(@NotNull VirtualFile fileOrDir) {
+    return myWorkspaceFileIndex.findContainingEntities(fileOrDir, SdkEntity.class, true, false, false, true, true, false);
+  }
+
   @Override
   public boolean isUnderIgnored(@NotNull VirtualFile file) {
     WorkspaceFileInternalInfo info = myWorkspaceFileIndex.getFileInfo(file, true, true, true, true, true, true);