diff --git a/blocks/library/chat/block.scss b/blocks/library/chat/block.scss
new file mode 100644
index 00000000000000..165980af9fae44
--- /dev/null
+++ b/blocks/library/chat/block.scss
@@ -0,0 +1,48 @@
+.wp-block-chat {
+	font-family: $editor-html-font;
+
+	> p {
+		margin: 0;
+
+		&:first-child .chat-author {
+			margin-top: 0;
+		}
+	}
+
+	.chat-author {
+		display: block;
+		margin-top: 1em;
+		color: $blue-wordpress;
+	}
+
+	.chat-message {
+		margin-left: 1em;
+	}
+
+	&.is-compact {
+		.chat-author {
+			display: inline;
+			margin: 0 .5em 0 0;
+		}
+
+		.chat-message {
+			margin-left: 0;
+		}
+	}
+
+	.chat-author-1 .chat-author {
+		color: $alert-yellow;
+	}
+
+	.chat-author-2 .chat-author {
+		color: $alert-red;
+	}
+
+	.chat-author-3 .chat-author {
+		color: $alert-green;
+	}
+
+	.chat-author-4 .chat-author {
+		color: $dark-gray-800;
+	}
+}
diff --git a/blocks/library/chat/chat-transcript.js b/blocks/library/chat/chat-transcript.js
new file mode 100644
index 00000000000000..db19f96b0a6b80
--- /dev/null
+++ b/blocks/library/chat/chat-transcript.js
@@ -0,0 +1,69 @@
+/**
+ * External dependencies
+ */
+import { uniq } from 'lodash';
+
+/**
+ * WordPress dependencies
+ */
+import classnames from 'classnames';
+
+export function normalizeTranscript( value ) {
+	const transcript = {
+		authors: [],
+		messages: [],
+	};
+
+	if ( ! value ) {
+		return transcript;
+	}
+
+	let authorIndex = -1;
+
+	value.split( '\n' ).map( ( line ) => {
+		line = line.trim();
+
+		const messageParts = line.split( ':' );
+		let message;
+
+		if ( 1 === messageParts.length ) {
+			message = messageParts.shift();
+		} else {
+			const author = messageParts.shift().trim();
+			message = messageParts.join( ':' ).trim();
+
+			transcript.authors.push( author );
+			transcript.authors = uniq( transcript.authors );
+			authorIndex = transcript.authors.indexOf( author );
+		}
+
+		transcript.messages.push( {
+			message: message,
+			authorIndex: authorIndex,
+		} );
+	} );
+
+	return transcript;
+}
+
+export default function ChatTranscript( { value, compact, className } ) {
+	// Normalize data
+	const transcript = normalizeTranscript( value );
+
+	const classes = classnames( className, { 'is-compact': compact } );
+
+	return (
+		<div className={ classes }>
+			{value && transcript.messages.map( ( entry, index ) => {
+				const author = -1 !== entry.authorIndex ? transcript.authors[ entry.authorIndex ] : undefined;
+
+				return (
+					entry.message && <p className={ author && `chat-author-${ entry.authorIndex }` } key={ index }>
+						{ author && <span className="chat-author">{ `${ author }:` }</span> }
+						<span className="chat-message">{ entry.message }</span>
+					</p>
+				);
+			} ) }
+		</div>
+	);
+}
diff --git a/blocks/library/chat/index.js b/blocks/library/chat/index.js
new file mode 100644
index 00000000000000..2d2538e0d06744
--- /dev/null
+++ b/blocks/library/chat/index.js
@@ -0,0 +1,83 @@
+/**
+ * External dependencies
+ */
+import TextareaAutosize from 'react-autosize-textarea';
+
+/**
+ * WordPress dependencies
+ */
+import { Placeholder } from 'components';
+import { __ } from 'i18n';
+
+/**
+ * Internal dependencies
+ */
+import './block.scss';
+import './style.scss';
+import { registerBlockType, query } from '../../api';
+import InspectorControls from '../../inspector-controls';
+import ToggleControl from '../../inspector-controls/toggle-control';
+import ChatTranscript from './chat-transcript';
+
+const { html } = query;
+
+registerBlockType( 'core/chat', {
+	title: __( 'Chat' ),
+
+	icon: 'format-chat',
+
+	category: 'formatting',
+
+	attributes: {
+		content: html(),
+	},
+
+	defaultAttributes: {
+		compact: false,
+	},
+
+	edit( { attributes, setAttributes, focus, setFocus, className } ) {
+		const { compact, content } = attributes;
+
+		const toggleCompact = () => setAttributes( { compact: ! compact } );
+
+		return [
+			focus && (
+				<InspectorControls key="inspector">
+					<ToggleControl
+						label={ __( 'Compact display' ) }
+						checked={ !! compact }
+						onChange={ toggleCompact }
+					/>
+				</InspectorControls>
+			),
+			focus && (
+				<Placeholder
+					key="placeholder"
+					icon="format-chat"
+					label={ __( 'Chat Transcript' ) }
+					className={ className }>
+					<TextareaAutosize
+						value={ content }
+						onFocus={ setFocus }
+						onChange={ ( event ) => setAttributes( { content: event.target.value } ) }
+						placeholder={ __( 'Paste transcript here…' ) }
+					/>
+				</Placeholder>
+			),
+			! focus && (
+				<ChatTranscript
+					className={ className }
+					value={ content }
+					compact={ compact }
+				/>
+			),
+		];
+	},
+
+	save( { attributes } ) {
+		const { compact, content } = attributes;
+
+		return <ChatTranscript value={ content } compact={ compact } />;
+	},
+} );
diff --git a/blocks/library/chat/style.scss b/blocks/library/chat/style.scss
new file mode 100644
index 00000000000000..4dc8672ff029ab
--- /dev/null
+++ b/blocks/library/chat/style.scss
@@ -0,0 +1,20 @@
+.wp-block-chat {
+	.components-placeholder__fieldset {
+		max-width: none;
+	}
+
+	textarea {
+		box-shadow: none;
+		background: $white;
+		font-family: $editor-html-font;
+		font-size: $text-editor-font-size;
+		color: $dark-gray-800;
+		border: 1px solid $light-gray-500;
+		border-radius: 4px;
+		margin: 0;
+		overflow-x: auto;
+		width: 100%;
+		min-height: 10em;
+		text-align: left;
+	}
+}
diff --git a/blocks/library/index.js b/blocks/library/index.js
index 93a71f0cc3accb..a45d643bb3ef0c 100644
--- a/blocks/library/index.js
+++ b/blocks/library/index.js
@@ -15,3 +15,4 @@ import './html';
 import './freeform';
 import './latest-posts';
 import './cover-image';
+import './chat';
diff --git a/blocks/test/fixtures/core__chat.html b/blocks/test/fixtures/core__chat.html
new file mode 100644
index 00000000000000..aef0439d8ab238
--- /dev/null
+++ b/blocks/test/fixtures/core__chat.html
@@ -0,0 +1,13 @@
+<!-- wp:core/chat {"compact":false} -->
+Pascal: Alexa, open the window
+Alexa: I'm not quite sure how to help you with
+Pascal: Siri, tell me a joke
+Siri: Pascal, get Siri-ous. Ha ha!
+Pascal: OK, Google. Now it's your turn!
+Google Home: Alexa, tell Siri to tell Pascal a better joke.
+Pascal: Ugh!
+Okay, that's enough. No internet for you anymore!
+Alexa: 💔
+Google Home: 😔
+Siri: 📴
+<!-- /wp:core/chat -->
diff --git a/blocks/test/fixtures/core__chat.json b/blocks/test/fixtures/core__chat.json
new file mode 100644
index 00000000000000..f283196f235a92
--- /dev/null
+++ b/blocks/test/fixtures/core__chat.json
@@ -0,0 +1,10 @@
+[
+    {
+        "uid": "_uid_0",
+        "name": "core/chat",
+        "attributes": {
+            "compact": false,
+            "content": "Pascal: Alexa, open the window\nAlexa: I'm not quite sure how to help you with\nPascal: Siri, tell me a joke\nSiri: Pascal, get Siri-ous. Ha ha!\nPascal: OK, Google. Now it's your turn!\nGoogle Home: Alexa, tell Siri to tell Pascal a better joke.\nPascal: Ugh!\nOkay, that's enough. No internet for you anymore!\nAlexa: 💔\nGoogle Home: 😔\nSiri: 📴"
+        }
+    }
+]
diff --git a/blocks/test/fixtures/core__chat.parsed.json b/blocks/test/fixtures/core__chat.parsed.json
new file mode 100644
index 00000000000000..5b05da21b3321c
--- /dev/null
+++ b/blocks/test/fixtures/core__chat.parsed.json
@@ -0,0 +1,13 @@
+[
+    {
+        "blockName": "core/chat",
+        "attrs": {
+            "compact": false
+        },
+        "rawContent": "\nPascal: Alexa, open the window\nAlexa: I'm not quite sure how to help you with\nPascal: Siri, tell me a joke\nSiri: Pascal, get Siri-ous. Ha ha!\nPascal: OK, Google. Now it's your turn!\nGoogle Home: Alexa, tell Siri to tell Pascal a better joke.\nPascal: Ugh!\nOkay, that's enough. No internet for you anymore!\nAlexa: 💔\nGoogle Home: 😔\nSiri: 📴\n"
+    },
+    {
+        "attrs": {},
+        "rawContent": "\n"
+    }
+]
diff --git a/blocks/test/fixtures/core__chat.serialized.html b/blocks/test/fixtures/core__chat.serialized.html
new file mode 100644
index 00000000000000..1e48052c810761
--- /dev/null
+++ b/blocks/test/fixtures/core__chat.serialized.html
@@ -0,0 +1,15 @@
+<!-- wp:core/chat {"compact":false} -->
+<div class="wp-block-chat">
+    <p class="chat-author-1"><span class="chat-author"> Pascal: </span><span class="chat-message">Alexa, open the window</span></p>
+    <p class="chat-author-2"><span class="chat-author"> Alexa: </span><span class="chat-message">I&#x27;m not quite sure how to help you with</span></p>
+    <p class="chat-author-1"><span class="chat-author"> Pascal: </span><span class="chat-message">Siri, tell me a joke</span></p>
+    <p class="chat-author-3"><span class="chat-author"> Siri: </span><span class="chat-message">Pascal, get Siri-ous. Ha ha!</span></p>
+    <p class="chat-author-1"><span class="chat-author"> Pascal: </span><span class="chat-message">OK, Google. Now it&#x27;s your turn!</span></p>
+    <p class="chat-author-4"><span class="chat-author"> Google Home: </span><span class="chat-message">Alexa, tell Siri to tell Pascal a better joke.</span></p>
+    <p class="chat-author-1"><span class="chat-author"> Pascal: </span><span class="chat-message">Ugh!</span></p>
+    <p class="chat-author-1"><span class="chat-message">Okay, that&#x27;s enough. No internet for you anymore!</span></p>
+    <p class="chat-author-2"><span class="chat-author"> Alexa: </span><span class="chat-message">💔</span></p>
+    <p class="chat-author-4"><span class="chat-author"> Google Home: </span><span class="chat-message">😔</span></p>
+    <p class="chat-author-3"><span class="chat-author"> Siri: </span><span class="chat-message">📴</span></p>
+</div>
+<!-- /wp:core/chat -->