diff --git a/src/app/_components/domains/Task/CreateTaskModal/CreateTaskModal.tsx b/src/app/_components/domains/Task/CreateTaskModal/CreateTaskModal.tsx
new file mode 100644
index 0000000..a67f63c
--- /dev/null
+++ b/src/app/_components/domains/Task/CreateTaskModal/CreateTaskModal.tsx
@@ -0,0 +1,90 @@
+'use client';
+
+import { FC, useCallback, useState } from 'react';
+import { Button, Input, Modal, ModalBody, ModalContent, ModalFooter, ModalHeader, Textarea } from '@nextui-org/react';
+import { Controller, SubmitHandler, useForm } from 'react-hook-form';
+import { Task } from '~/domains/Task';
+
+type Props = {
+  isOpen: boolean;
+  onOpenChange: () => void;
+  currentTask?: Task;
+};
+
+interface IFormInput {
+  title: string;
+  body: string;
+}
+
+export const CreateModal: FC<Props> = ({ isOpen, onOpenChange, currentTask }) => {
+  const [isLoading, setIsLoading] = useState(false);
+
+  const { control, handleSubmit, reset } = useForm<IFormInput>({
+    defaultValues: {
+      title: currentTask?.title,
+      body: currentTask?.body,
+    },
+  });
+
+  const handleOpenChange = useCallback(() => {
+    reset();
+    onOpenChange();
+  }, [onOpenChange, reset]);
+
+  const onSubmit: SubmitHandler<IFormInput> = useCallback(async () => {
+    if (isLoading) return;
+    setIsLoading(true);
+    new Promise((resolve) => setTimeout(resolve, 1000))
+      .catch((error) => {
+        // TODO: 本来はコンソールに出すのではなく、ユーザーにエラーを通知する
+        console.error(error);
+      })
+      .then(() => {
+        handleOpenChange();
+      })
+      .finally(() => {
+        setIsLoading(false);
+      });
+  }, [handleOpenChange, isLoading]);
+
+  return (
+    <Modal isOpen={isOpen} onOpenChange={handleOpenChange} placement="center" hideCloseButton size="xl">
+      <ModalContent>
+        <form onSubmit={handleSubmit(onSubmit)}>
+          <ModalHeader>タスクを{currentTask ? '編集' : '作成'}する</ModalHeader>
+          <ModalBody>
+            <Controller
+              name="title"
+              control={control}
+              render={({ field, fieldState }) => (
+                <Input
+                  {...field}
+                  label="タイトル"
+                  isInvalid={fieldState.isDirty && field.value.length === 0}
+                  errorMessage={fieldState.isDirty && field.value.length === 0 && 'タイトルを入力してください'}
+                />
+              )}
+            />
+            <Controller
+              name="body"
+              control={control}
+              render={({ field, fieldState }) => (
+                <Textarea
+                  {...field}
+                  label="説明"
+                  isInvalid={fieldState.isDirty && field.value.length === 0}
+                  errorMessage={fieldState.isDirty && field.value.length === 0 && 'タイトルを入力してください'}
+                />
+              )}
+            />
+          </ModalBody>
+          <ModalFooter>
+            <Button color="primary" onClick={handleSubmit(onSubmit)} isLoading={isLoading}>
+              タスクを作成
+            </Button>
+          </ModalFooter>
+        </form>
+      </ModalContent>
+    </Modal>
+  );
+};
diff --git a/src/app/_components/domains/Task/CreateTaskModal/index.ts b/src/app/_components/domains/Task/CreateTaskModal/index.ts
new file mode 100644
index 0000000..15d0f3c
--- /dev/null
+++ b/src/app/_components/domains/Task/CreateTaskModal/index.ts
@@ -0,0 +1 @@
+export { CreateModal } from './CreateTaskModal';
diff --git a/src/app/_components/domains/Task/TaskList/TaskList.tsx b/src/app/_components/domains/Task/TaskList/TaskList.tsx
index 63e860d..b04c476 100644
--- a/src/app/_components/domains/Task/TaskList/TaskList.tsx
+++ b/src/app/_components/domains/Task/TaskList/TaskList.tsx
@@ -1,18 +1,23 @@
 'use client';
 
-import { Button, Card } from '@nextui-org/react';
+import { Button, Card, useDisclosure } from '@nextui-org/react';
 import { FC } from 'react';
+import { CreateModal } from '../CreateTaskModal';
 import { Icon } from '~/app/_components/uiParts/icons';
+
 export const TaskList: FC = () => {
+  const { isOpen, onOpen, onOpenChange } = useDisclosure();
+
   return (
     <div className="w-full">
       <p className="text-md font-bold mb-[16px] text-gray-700">タスク一覧</p>
       <Card className="md:p-[8px] p-[4px] flex flex-col rounded-[8px]" shadow="none" radius="none">
         ここにタスク一覧が表示されます
       </Card>
-      <Button className="mt-[8px]" size="sm" color="primary" variant="light" startContent={<Icon icon="PLUS" />}>
+      <Button className="mt-[8px]" size="sm" color="primary" variant="light" startContent={<Icon icon="PLUS" />} onClick={() => onOpen()}>
         タスクの追加
       </Button>
+      <CreateModal isOpen={isOpen} onOpenChange={onOpenChange} />
     </div>
   );
 };