diff --git a/packages/lsd-react/src/components/CSSBaseline/CSSBaseline.tsx b/packages/lsd-react/src/components/CSSBaseline/CSSBaseline.tsx
index a68261c..8ccb379 100644
--- a/packages/lsd-react/src/components/CSSBaseline/CSSBaseline.tsx
+++ b/packages/lsd-react/src/components/CSSBaseline/CSSBaseline.tsx
@@ -32,6 +32,8 @@ import { TagStyles } from '../Tag/Tag.styles'
 import { TextFieldStyles } from '../TextField/TextField.styles'
 import { defaultThemes, Theme, withTheme } from '../Theme'
 import { TypographyStyles } from '../Typography/Typography.styles'
+import { ModalStyles } from '../Modal/Modal.styles'
+import { ModalBodyStyles } from '../ModalBody/ModalBody.styles'
 
 const componentStyles: Array<ReturnType<typeof withTheme> | SerializedStyles> =
   [
@@ -66,6 +68,8 @@ const componentStyles: Array<ReturnType<typeof withTheme> | SerializedStyles> =
     TableBodyStyles,
     TableItemStyles,
     TableRowStyles,
+    ModalStyles,
+    ModalBodyStyles,
   ]
 
 export const CSSBaseline: React.FC<{ theme?: Theme }> = ({
diff --git a/packages/lsd-react/src/components/Modal/Modal.classes.ts b/packages/lsd-react/src/components/Modal/Modal.classes.ts
new file mode 100644
index 0000000..0d6ab9e
--- /dev/null
+++ b/packages/lsd-react/src/components/Modal/Modal.classes.ts
@@ -0,0 +1,18 @@
+export const modalClasses = {
+  root: `lsd-modal`,
+
+  small: 'lsd-modal--small',
+  medium: 'lsd-modal--medium',
+  large: 'lsd-modal--large',
+  extraSmall: 'lsd-modal--extra-small',
+
+  modalContainer: 'lsd-modal__container',
+
+  header: 'lsd-modal__header',
+  title: 'lsd-modal__title',
+  subtitle: 'lsd-modal__subtitle',
+
+  titleAndSubtitleContainer: 'lsd-modal__title-and-subtitle-container',
+
+  closeIcon: 'lsd-modal__close-icon',
+}
diff --git a/packages/lsd-react/src/components/Modal/Modal.stories.tsx b/packages/lsd-react/src/components/Modal/Modal.stories.tsx
new file mode 100644
index 0000000..50e6640
--- /dev/null
+++ b/packages/lsd-react/src/components/Modal/Modal.stories.tsx
@@ -0,0 +1,55 @@
+import React, { useState } from 'react'
+import { Meta, Story } from '@storybook/react'
+import { ModalBody } from '../ModalBody'
+import { Modal, ModalProps } from './Modal'
+import { Button } from '../Button'
+
+export default {
+  title: 'Modal',
+  component: Modal,
+  argTypes: {
+    size: {
+      type: {
+        name: 'enum',
+        value: ['extraSmall', 'small', 'medium', 'large'],
+      },
+    },
+  },
+} as Meta
+
+export const Root: Story<
+  ModalProps & {
+    body: string
+  }
+> = ({ body, ...args }) => {
+  const [isOpen, setIsOpen] = useState(false) // state to handle modal open/close
+
+  return (
+    <div style={{ width: 400 }}>
+      <Button onClick={() => setIsOpen(!isOpen)}>Open Modal</Button>
+      <Modal {...args} isOpen={isOpen} onClose={() => setIsOpen(false)}>
+        <ModalBody>{body}</ModalBody>
+        <div style={{ display: 'flex' }}>
+          <Button
+            size={args.size === 'extraSmall' ? 'small' : args.size}
+            style={{
+              marginRight: 12,
+            }}
+          >
+            Button 1
+          </Button>
+          <Button size={args.size === 'extraSmall' ? 'small' : args.size}>
+            Button 2
+          </Button>
+        </div>
+      </Modal>
+    </div>
+  )
+}
+
+Root.args = {
+  size: 'large',
+  title: 'Title',
+  subtitle: 'Subtitle goes here',
+  body: 'Content goes here.',
+}
diff --git a/packages/lsd-react/src/components/Modal/Modal.styles.ts b/packages/lsd-react/src/components/Modal/Modal.styles.ts
new file mode 100644
index 0000000..9580fed
--- /dev/null
+++ b/packages/lsd-react/src/components/Modal/Modal.styles.ts
@@ -0,0 +1,74 @@
+import { css } from '@emotion/react'
+import { modalClasses } from './Modal.classes'
+
+export const ModalStyles = css`
+  .${modalClasses.root} {
+    box-sizing: border-box;
+    display: flex;
+    flex-direction: column;
+
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background-color: rgba(0, 0, 0, 0.5); /* semi-transparent overlay */
+    display: flex;
+    justify-content: center;
+    align-items: center;
+
+    z-index: 9999;
+  }
+
+  .${modalClasses.modalContainer} {
+    background: rgb(var(--lsd-surface-primary));
+    padding: 20px;
+
+    max-width: 90%;
+  }
+
+  .${modalClasses.header} {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+  }
+
+  .${modalClasses.title} {
+  }
+
+  .${modalClasses.subtitle} {
+  }
+
+  .${modalClasses.closeIcon} {
+    cursor: pointer;
+  }
+
+  .${modalClasses.titleAndSubtitleContainer} {
+    display: flex;
+    flex-direction: column;
+  }
+
+  .${modalClasses.large} {
+    .${modalClasses.modalContainer} {
+      min-width: 960px;
+    }
+  }
+
+  .${modalClasses.medium} {
+    .${modalClasses.modalContainer} {
+      min-width: 768px;
+    }
+  }
+
+  .${modalClasses.small} {
+    .${modalClasses.modalContainer} {
+      min-width: 614px;
+    }
+  }
+
+  .${modalClasses.extraSmall} {
+    .${modalClasses.modalContainer} {
+      min-width: 490px;
+    }
+  }
+`
diff --git a/packages/lsd-react/src/components/Modal/Modal.tsx b/packages/lsd-react/src/components/Modal/Modal.tsx
new file mode 100644
index 0000000..faa1060
--- /dev/null
+++ b/packages/lsd-react/src/components/Modal/Modal.tsx
@@ -0,0 +1,94 @@
+import clsx from 'clsx'
+import React from 'react'
+import {
+  CommonProps,
+  omitCommonProps,
+  useCommonProps,
+} from '../../utils/useCommonProps'
+import { modalClasses } from './Modal.classes'
+import { CloseIcon } from '../Icons'
+import { Typography } from '../Typography'
+import { IconButton } from '../IconButton'
+
+export type ModalProps = CommonProps &
+  Omit<React.HTMLAttributes<HTMLDivElement>, 'label'> & {
+    isOpen: boolean // new prop to control visibility
+    size?: 'extraSmall' | 'small' | 'medium' | 'large'
+    title?: string
+    subtitle?: string
+    onClose?: () => void
+  }
+
+export const Modal: React.FC<ModalProps> & {
+  classes: typeof modalClasses
+} = ({
+  isOpen,
+  size = 'large',
+  title,
+  subtitle,
+  onClose,
+  children,
+  ...props
+}) => {
+  const commonProps = useCommonProps(props)
+
+  // Close modal when overlay is clicked
+  const handleOverlayClick = (e: React.MouseEvent) => {
+    if (e.target === e.currentTarget && onClose) {
+      onClose()
+    }
+  }
+
+  if (!isOpen) {
+    return null
+  }
+
+  return (
+    <div
+      {...omitCommonProps(props)}
+      className={clsx(
+        commonProps.className,
+        modalClasses.root,
+        modalClasses[size],
+      )}
+      onClick={handleOverlayClick}
+    >
+      <div className={clsx(modalClasses.modalContainer)}>
+        <div className={modalClasses.header}>
+          <div className={modalClasses.titleAndSubtitleContainer}>
+            {!!title && (
+              <Typography
+                className={modalClasses.title}
+                component="div"
+                variant={size === 'small' ? 'h6' : 'h5'}
+              >
+                {title}
+              </Typography>
+            )}
+
+            {!!subtitle && (
+              <Typography
+                className={modalClasses.title}
+                variant={size === 'small' ? 'label2' : 'label1'}
+                component="div"
+              >
+                {subtitle}
+              </Typography>
+            )}
+          </div>
+
+          <IconButton
+            onClick={onClose}
+            className={modalClasses.closeIcon}
+            size="medium"
+          >
+            <CloseIcon color="primary" />
+          </IconButton>
+        </div>
+        {children}
+      </div>
+    </div>
+  )
+}
+
+Modal.classes = modalClasses
diff --git a/packages/lsd-react/src/components/Modal/index.ts b/packages/lsd-react/src/components/Modal/index.ts
new file mode 100644
index 0000000..8d3bcd7
--- /dev/null
+++ b/packages/lsd-react/src/components/Modal/index.ts
@@ -0,0 +1 @@
+export * from './Modal'
diff --git a/packages/lsd-react/src/components/ModalBody/ModalBody.classes.ts b/packages/lsd-react/src/components/ModalBody/ModalBody.classes.ts
new file mode 100644
index 0000000..e33da6b
--- /dev/null
+++ b/packages/lsd-react/src/components/ModalBody/ModalBody.classes.ts
@@ -0,0 +1,3 @@
+export const modalBodyClasses = {
+  root: `lsd-modal-body`,
+}
diff --git a/packages/lsd-react/src/components/ModalBody/ModalBody.stories.tsx b/packages/lsd-react/src/components/ModalBody/ModalBody.stories.tsx
new file mode 100644
index 0000000..5dcff29
--- /dev/null
+++ b/packages/lsd-react/src/components/ModalBody/ModalBody.stories.tsx
@@ -0,0 +1,30 @@
+import { Meta, Story } from '@storybook/react'
+import { ModalBody, ModalBodyProps } from './ModalBody'
+
+export default {
+  title: 'ModalBody',
+  component: ModalBody,
+  argTypes: {
+    size: {
+      table: {
+        disable: true,
+      },
+    },
+  },
+} as Meta
+
+export const Root: Story<
+  ModalBodyProps & {
+    body: string
+    title: string
+  }
+> = ({ body, ...args }) => (
+  <div style={{ width: 400 }}>
+    <ModalBody {...args}>{body}</ModalBody>
+  </div>
+)
+
+Root.args = {
+  title: 'Title',
+  body: 'A wise man can learn more from a foolish question than a fool can learn from a wise answer.',
+}
diff --git a/packages/lsd-react/src/components/ModalBody/ModalBody.styles.ts b/packages/lsd-react/src/components/ModalBody/ModalBody.styles.ts
new file mode 100644
index 0000000..3f3a844
--- /dev/null
+++ b/packages/lsd-react/src/components/ModalBody/ModalBody.styles.ts
@@ -0,0 +1,16 @@
+import { css } from '@emotion/react'
+import { modalBodyClasses } from './ModalBody.classes'
+
+export const ModalBodyStyles = css`
+  .${modalBodyClasses.root} {
+    box-sizing: border-box;
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+
+    border: 1px solid rgb(var(--lsd-border-primary));
+    padding: 30px;
+    margin: 18px 0;
+  }
+`
diff --git a/packages/lsd-react/src/components/ModalBody/ModalBody.tsx b/packages/lsd-react/src/components/ModalBody/ModalBody.tsx
new file mode 100644
index 0000000..5571928
--- /dev/null
+++ b/packages/lsd-react/src/components/ModalBody/ModalBody.tsx
@@ -0,0 +1,28 @@
+import clsx from 'clsx'
+import React from 'react'
+import {
+  CommonProps,
+  omitCommonProps,
+  useCommonProps,
+} from '../../utils/useCommonProps'
+import { modalBodyClasses } from './ModalBody.classes'
+
+export type ModalBodyProps = CommonProps &
+  Omit<React.HTMLAttributes<HTMLDivElement>, 'label'>
+
+export const ModalBody: React.FC<ModalBodyProps> & {
+  classes: typeof modalBodyClasses
+} = ({ children, ...props }) => {
+  const commonProps = useCommonProps(props)
+
+  return (
+    <div
+      {...omitCommonProps(props)}
+      className={clsx(commonProps.className, modalBodyClasses.root)}
+    >
+      {children}
+    </div>
+  )
+}
+
+ModalBody.classes = modalBodyClasses
diff --git a/packages/lsd-react/src/components/ModalBody/index.ts b/packages/lsd-react/src/components/ModalBody/index.ts
new file mode 100644
index 0000000..dbac786
--- /dev/null
+++ b/packages/lsd-react/src/components/ModalBody/index.ts
@@ -0,0 +1 @@
+export * from './ModalBody'
diff --git a/packages/lsd-react/src/index.ts b/packages/lsd-react/src/index.ts
index 31605ee..e50a009 100644
--- a/packages/lsd-react/src/index.ts
+++ b/packages/lsd-react/src/index.ts
@@ -30,3 +30,5 @@ export * from './components/Tag'
 export * from './components/TextField'
 export * from './components/Theme'
 export * from './components/Typography'
+export * from './components/Modal'
+export * from './components/ModalBody'