diff --git a/optuna_dashboard/_app.py b/optuna_dashboard/_app.py
index c2e5099a..bdbfb168 100644
--- a/optuna_dashboard/_app.py
+++ b/optuna_dashboard/_app.py
@@ -180,7 +180,10 @@ def create_app(
     @app.delete("/api/studies/<study_id:int>")
     @json_api_view
     def delete_study(study_id: int) -> dict[str, Any]:
-        if artifact_store is not None:
+        data = request.json or {}
+        remove_associated_artifacts = data.get("remove_associated_artifacts", True)
+
+        if artifact_store is not None and remove_associated_artifacts:
             delete_all_artifacts(artifact_store, storage, study_id)
 
         try:
diff --git a/optuna_dashboard/ts/action.ts b/optuna_dashboard/ts/action.ts
index 091e7339..f3109f0a 100644
--- a/optuna_dashboard/ts/action.ts
+++ b/optuna_dashboard/ts/action.ts
@@ -284,9 +284,9 @@ export const actionCreator = () => {
       })
   }
 
-  const deleteStudy = (studyId: number) => {
+  const deleteStudy = (studyId: number, removeAssociatedArtifacts: boolean) => {
     apiClient
-      .deleteStudy(studyId)
+      .deleteStudy(studyId, removeAssociatedArtifacts)
       .then(() => {
         setStudySummaries(studySummaries.filter((s) => s.study_id !== studyId))
         enqueueSnackbar(`Success to delete a study (id=${studyId})`, {
diff --git a/optuna_dashboard/ts/apiClient.ts b/optuna_dashboard/ts/apiClient.ts
index 038ea9f7..f1a7ad8c 100644
--- a/optuna_dashboard/ts/apiClient.ts
+++ b/optuna_dashboard/ts/apiClient.ts
@@ -185,7 +185,10 @@ export abstract class APIClient {
     studyName: string,
     directions: Optuna.StudyDirection[]
   ): Promise<StudySummary>
-  abstract deleteStudy(studyId: number): Promise<void>
+  abstract deleteStudy(
+    studyId: number,
+    removeAssociatedArtifacts: boolean
+  ): Promise<void>
   abstract renameStudy(
     studyId: number,
     studyName: string
diff --git a/optuna_dashboard/ts/axiosClient.ts b/optuna_dashboard/ts/axiosClient.ts
index 1c52c42f..bb2b811a 100644
--- a/optuna_dashboard/ts/axiosClient.ts
+++ b/optuna_dashboard/ts/axiosClient.ts
@@ -116,10 +116,19 @@ export class AxiosClient extends APIClient {
             : undefined,
         }
       })
-  deleteStudy = (studyId: number): Promise<void> =>
-    this.axiosInstance.delete(`/api/studies/${studyId}`).then(() => {
-      return
-    })
+  deleteStudy = (
+    studyId: number,
+    removeAssociatedArtifacts: boolean
+  ): Promise<void> =>
+    this.axiosInstance
+      .delete(`/api/studies/${studyId}`, {
+        data: {
+          remove_associated_artifacts: removeAssociatedArtifacts,
+        },
+      })
+      .then(() => {
+        return
+      })
   renameStudy = (studyId: number, studyName: string): Promise<StudySummary> =>
     this.axiosInstance
       .post<RenameStudyResponse>(`/api/studies/${studyId}/rename`, {
diff --git a/optuna_dashboard/ts/components/Artifact/DeleteArtifactDialog.tsx b/optuna_dashboard/ts/components/Artifact/DeleteArtifactDialog.tsx
index 7b5f90b2..d55dd32a 100644
--- a/optuna_dashboard/ts/components/Artifact/DeleteArtifactDialog.tsx
+++ b/optuna_dashboard/ts/components/Artifact/DeleteArtifactDialog.tsx
@@ -1,10 +1,12 @@
 import {
+  Alert,
   Button,
   Dialog,
   DialogActions,
   DialogContent,
   DialogContentText,
   DialogTitle,
+  useTheme,
 } from "@mui/material"
 import React, { ReactNode, useState, FC } from "react"
 import { Artifact } from "ts/types/optuna"
@@ -111,6 +113,7 @@ const DeleteDialog: FC<{
   filename,
   handleDeleteArtifact,
 }) => {
+  const theme = useTheme()
   return (
     <Dialog
       open={openDeleteArtifactDialog}
@@ -123,10 +126,18 @@ const DeleteDialog: FC<{
         Delete artifact
       </DialogTitle>
       <DialogContent>
-        <DialogContentText>
+        <DialogContentText
+          sx={{
+            marginBottom: theme.spacing(2),
+          }}
+        >
           Are you sure you want to delete an artifact ("
           {filename}")?
         </DialogContentText>
+        <Alert severity="warning">
+          If this artifact is linked to another study or trial, it will no
+          longer be accessible from that study or trial as well.
+        </Alert>
       </DialogContent>
       <DialogActions>
         <Button onClick={handleCloseDeleteArtifactDialog} color="primary">
diff --git a/optuna_dashboard/ts/components/DeleteStudyDialog.tsx b/optuna_dashboard/ts/components/DeleteStudyDialog.tsx
index 14312e06..d5640328 100644
--- a/optuna_dashboard/ts/components/DeleteStudyDialog.tsx
+++ b/optuna_dashboard/ts/components/DeleteStudyDialog.tsx
@@ -1,32 +1,40 @@
 import {
+  Alert,
   Button,
+  Checkbox,
   Dialog,
   DialogActions,
   DialogContent,
   DialogContentText,
   DialogTitle,
+  FormControlLabel,
 } from "@mui/material"
 import React, { ReactNode, useState } from "react"
+import { useRecoilValue } from "recoil"
 import { actionCreator } from "../action"
+import { artifactIsAvailable as artifactIsAvailableState } from "../state"
 
 export const useDeleteStudyDialog = (): [
   (studyId: number) => void,
   () => ReactNode,
 ] => {
   const action = actionCreator()
+  const artifactIsAvailable = useRecoilValue(artifactIsAvailableState)
 
   const [openDeleteStudyDialog, setOpenDeleteStudyDialog] = useState(false)
   const [deleteStudyID, setDeleteStudyID] = useState(-1)
+  const [removeAssociatedArtifacts, setRemoveAssociatedArtifacts] =
+    useState(false)
 
   const handleCloseDeleteStudyDialog = () => {
     setOpenDeleteStudyDialog(false)
     setDeleteStudyID(-1)
+    setRemoveAssociatedArtifacts(false)
   }
 
   const handleDeleteStudy = () => {
-    action.deleteStudy(deleteStudyID)
-    setOpenDeleteStudyDialog(false)
-    setDeleteStudyID(-1)
+    action.deleteStudy(deleteStudyID, removeAssociatedArtifacts)
+    handleCloseDeleteStudyDialog()
   }
 
   const openDialog = (studyId: number) => {
@@ -42,12 +50,33 @@ export const useDeleteStudyDialog = (): [
           handleCloseDeleteStudyDialog()
         }}
         aria-labelledby="delete-study-dialog-title"
+        fullWidth
+        maxWidth="xs"
       >
         <DialogTitle id="delete-study-dialog-title">Delete study</DialogTitle>
         <DialogContent>
           <DialogContentText>
             Are you sure you want to delete a study (id={deleteStudyID})?
           </DialogContentText>
+          {artifactIsAvailable && (
+            <>
+              <FormControlLabel
+                label="Remove associated trial/study artifacts."
+                control={
+                  <Checkbox
+                    checked={removeAssociatedArtifacts}
+                    onChange={() => setRemoveAssociatedArtifacts((cur) => !cur)}
+                  />
+                }
+              />
+              {removeAssociatedArtifacts && (
+                <Alert severity="warning">
+                  If artifacts are linked to another study or trial, they will
+                  no longer be accessible from that study or trial as well.
+                </Alert>
+              )}
+            </>
+          )}
         </DialogContent>
         <DialogActions>
           <Button onClick={handleCloseDeleteStudyDialog} color="primary">
diff --git a/python_tests/test_api.py b/python_tests/test_api.py
index d644635f..818e4465 100644
--- a/python_tests/test_api.py
+++ b/python_tests/test_api.py
@@ -2,6 +2,7 @@ from __future__ import annotations
 
 import json
 import sys
+import tempfile
 from unittest import TestCase
 
 import optuna
@@ -523,6 +524,78 @@ class APITestCase(TestCase):
         self.assertEqual(status, 204)
         self.assertEqual(len(get_all_study_summaries(storage)), 1)
 
+    @pytest.mark.skipif(
+        version.parse(optuna.__version__) < version.parse("3.4.0"),
+        reason="Needs optuna.artifacts",
+    )
+    def test_delete_study_with_removing_artifacts(self) -> None:
+        from optuna.artifacts import upload_artifact
+        from optuna.artifacts.exceptions import ArtifactNotFound
+
+        storage = optuna.storages.InMemoryStorage()
+        study = optuna.create_study(storage=storage)
+        with tempfile.TemporaryDirectory() as tmpdir_name:
+            artifact_store = optuna.artifacts.FileSystemArtifactStore(base_path=tmpdir_name)
+            with tempfile.NamedTemporaryFile() as f:
+                f.write(b"dummy")
+                f.flush()
+                artifact_id = upload_artifact(study, f.name, artifact_store)
+
+            app = create_app(storage, artifact_store)
+
+            with artifact_store.open_reader(artifact_id) as reader:
+                self.assertEqual(reader.read(), b"dummy")
+
+            status, _, _ = send_request(
+                app,
+                f"/api/studies/{study._study_id}",
+                "DELETE",
+                body=json.dumps({"remove_associated_artifacts": True}),
+                content_type="application/json",
+            )
+            self.assertEqual(status, 204)
+
+            with self.assertRaises(ArtifactNotFound):
+                with artifact_store.open_reader(artifact_id) as reader:
+                    reader.read()
+
+        self.assertEqual(len(get_all_study_summaries(storage)), 0)
+
+    @pytest.mark.skipif(
+        version.parse(optuna.__version__) < version.parse("3.4.0"),
+        reason="Needs optuna.artifacts",
+    )
+    def test_delete_study_without_removing_artifacts(self) -> None:
+        from optuna.artifacts import upload_artifact
+
+        storage = optuna.storages.InMemoryStorage()
+        study = optuna.create_study(storage=storage)
+        with tempfile.TemporaryDirectory() as tmpdir_name:
+            artifact_store = optuna.artifacts.FileSystemArtifactStore(base_path=tmpdir_name)
+            with tempfile.NamedTemporaryFile() as f:
+                f.write(b"dummy")
+                f.flush()
+                artifact_id = upload_artifact(study, f.name, artifact_store)
+
+            app = create_app(storage, artifact_store)
+
+            with artifact_store.open_reader(artifact_id) as reader:
+                self.assertEqual(reader.read(), b"dummy")
+
+            status, _, _ = send_request(
+                app,
+                f"/api/studies/{study._study_id}",
+                "DELETE",
+                body=json.dumps({"remove_associated_artifacts": False}),
+                content_type="application/json",
+            )
+            self.assertEqual(status, 204)
+
+            with artifact_store.open_reader(artifact_id) as reader:
+                self.assertEqual(reader.read(), b"dummy")
+
+        self.assertEqual(len(get_all_study_summaries(storage)), 0)
+
     def test_delete_study_not_found(self) -> None:
         storage = optuna.storages.InMemoryStorage()
         app = create_app(storage)