diff --git a/docs/reference/models/transform.md b/docs/reference/models/transform.md
index e99de6985..de57a41fd 100644
--- a/docs/reference/models/transform.md
+++ b/docs/reference/models/transform.md
@@ -56,6 +56,7 @@ Transform methods can either operate on the [`Document`](./document.md), the [`S
 - [Node Transforms](#node-transforms)
   - [`addMarkByKey`](#addmarkbykey)
   - [`insertNodeByKey`](#insertnodebykey)
+  - [`insertFragmentByKey`](#insertfragmentbykey)
   - [`insertTextByKey`](#inserttextbykey)
   - [`moveNodeByKey`](#movenodebykey)
   - [`removeMarkByKey`](#removemarkbykey)
@@ -332,6 +333,11 @@ Add a `mark` to `length` characters starting at an `offset` in a [`Node`](./node
 
 Insert a `node` at `index` inside a parent [`Node`](./node.md) by its `key`.
 
+### `insertFragmentByKey`
+`insertFragmentByKey(key: String, index: Number, fragment: Fragment) => Transform`
+
+Insert a [`Fragment`](./fragment.md) at `index` inside a parent [`Node`](./node.md) by its `key`.
+
 ### `insertTextByKey`
 `insertTextByKey(key: String, offset: Number, text: String, [marks: Set]) => Transform`
 
diff --git a/src/transforms/by-key.js b/src/transforms/by-key.js
index 67e5bd9d0..699c4b3d6 100644
--- a/src/transforms/by-key.js
+++ b/src/transforms/by-key.js
@@ -37,6 +37,27 @@ Transforms.addMarkByKey = (transform, key, offset, length, mark, options = {}) =
   }
 }
 
+/**
+ * Insert a `fragment` at `index` in a node by `key`.
+ *
+ * @param {Transform} transform
+ * @param {String} key
+ * @param {Number} index
+ * @param {Fragment} fragment
+ * @param {Object} options
+ *   @property {Boolean} normalize
+ */
+
+Transforms.insertFragmentByKey = (transform, key, index, fragment, options = {}) => {
+  const { normalize = true } = options
+
+  fragment.nodes.forEach((node, i) => transform.insertNodeByKey(key, index + i, node))
+
+  if (normalize) {
+    transform.normalizeNodeByKey(key, SCHEMA)
+  }
+}
+
 /**
  * Insert a `node` at `index` in a node by `key`.
  *
diff --git a/test/transforms/fixtures/by-key/insert-fragment-by-key/end-of-target/fragment.yaml b/test/transforms/fixtures/by-key/insert-fragment-by-key/end-of-target/fragment.yaml
new file mode 100644
index 000000000..bcead8e4c
--- /dev/null
+++ b/test/transforms/fixtures/by-key/insert-fragment-by-key/end-of-target/fragment.yaml
@@ -0,0 +1,12 @@
+
+nodes:
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: fragment
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: fragment2
diff --git a/test/transforms/fixtures/by-key/insert-fragment-by-key/end-of-target/index.js b/test/transforms/fixtures/by-key/insert-fragment-by-key/end-of-target/index.js
new file mode 100644
index 000000000..fc2dc70a1
--- /dev/null
+++ b/test/transforms/fixtures/by-key/insert-fragment-by-key/end-of-target/index.js
@@ -0,0 +1,18 @@
+
+import path from 'path'
+import readMetadata from 'read-metadata'
+import { Raw } from '../../../../../..'
+
+export default function (state) {
+  const file = path.resolve(__dirname, 'fragment.yaml')
+  const raw = readMetadata.sync(file)
+  const fragment = Raw.deserialize(raw, { terse: true }).document
+
+  const { document } = state
+  const end = document.nodes.size
+
+  return state
+    .transform()
+    .insertFragmentByKey(document.key, end, fragment)
+    .apply()
+}
diff --git a/test/transforms/fixtures/by-key/insert-fragment-by-key/end-of-target/input.yaml b/test/transforms/fixtures/by-key/insert-fragment-by-key/end-of-target/input.yaml
new file mode 100644
index 000000000..27f668fe2
--- /dev/null
+++ b/test/transforms/fixtures/by-key/insert-fragment-by-key/end-of-target/input.yaml
@@ -0,0 +1,7 @@
+
+nodes:
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: word
diff --git a/test/transforms/fixtures/by-key/insert-fragment-by-key/end-of-target/output.yaml b/test/transforms/fixtures/by-key/insert-fragment-by-key/end-of-target/output.yaml
new file mode 100644
index 000000000..f9792bf00
--- /dev/null
+++ b/test/transforms/fixtures/by-key/insert-fragment-by-key/end-of-target/output.yaml
@@ -0,0 +1,17 @@
+
+nodes:
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: word
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: fragment
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: fragment2
diff --git a/test/transforms/fixtures/by-key/insert-fragment-by-key/middle-of-target/fragment.yaml b/test/transforms/fixtures/by-key/insert-fragment-by-key/middle-of-target/fragment.yaml
new file mode 100644
index 000000000..bcead8e4c
--- /dev/null
+++ b/test/transforms/fixtures/by-key/insert-fragment-by-key/middle-of-target/fragment.yaml
@@ -0,0 +1,12 @@
+
+nodes:
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: fragment
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: fragment2
diff --git a/test/transforms/fixtures/by-key/insert-fragment-by-key/middle-of-target/index.js b/test/transforms/fixtures/by-key/insert-fragment-by-key/middle-of-target/index.js
new file mode 100644
index 000000000..1102cb5ac
--- /dev/null
+++ b/test/transforms/fixtures/by-key/insert-fragment-by-key/middle-of-target/index.js
@@ -0,0 +1,17 @@
+
+import path from 'path'
+import readMetadata from 'read-metadata'
+import { Raw } from '../../../../../..'
+
+export default function (state) {
+  const file = path.resolve(__dirname, 'fragment.yaml')
+  const raw = readMetadata.sync(file)
+  const fragment = Raw.deserialize(raw, { terse: true }).document
+
+  const { document } = state
+
+  return state
+    .transform()
+    .insertFragmentByKey(document.key, 2, fragment)
+    .apply()
+}
diff --git a/test/transforms/fixtures/by-key/insert-fragment-by-key/middle-of-target/input.yaml b/test/transforms/fixtures/by-key/insert-fragment-by-key/middle-of-target/input.yaml
new file mode 100644
index 000000000..cba6b71ab
--- /dev/null
+++ b/test/transforms/fixtures/by-key/insert-fragment-by-key/middle-of-target/input.yaml
@@ -0,0 +1,17 @@
+
+nodes:
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: word
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: word2
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: word3
diff --git a/test/transforms/fixtures/by-key/insert-fragment-by-key/middle-of-target/output.yaml b/test/transforms/fixtures/by-key/insert-fragment-by-key/middle-of-target/output.yaml
new file mode 100644
index 000000000..5f87a11e0
--- /dev/null
+++ b/test/transforms/fixtures/by-key/insert-fragment-by-key/middle-of-target/output.yaml
@@ -0,0 +1,27 @@
+
+nodes:
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: word
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: word2
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: fragment
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: fragment2
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: word3
diff --git a/test/transforms/fixtures/by-key/insert-fragment-by-key/start-of-target/fragment.yaml b/test/transforms/fixtures/by-key/insert-fragment-by-key/start-of-target/fragment.yaml
new file mode 100644
index 000000000..bcead8e4c
--- /dev/null
+++ b/test/transforms/fixtures/by-key/insert-fragment-by-key/start-of-target/fragment.yaml
@@ -0,0 +1,12 @@
+
+nodes:
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: fragment
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: fragment2
diff --git a/test/transforms/fixtures/by-key/insert-fragment-by-key/start-of-target/index.js b/test/transforms/fixtures/by-key/insert-fragment-by-key/start-of-target/index.js
new file mode 100644
index 000000000..e393f377d
--- /dev/null
+++ b/test/transforms/fixtures/by-key/insert-fragment-by-key/start-of-target/index.js
@@ -0,0 +1,17 @@
+
+import path from 'path'
+import readMetadata from 'read-metadata'
+import { Raw } from '../../../../../..'
+
+export default function (state) {
+  const file = path.resolve(__dirname, 'fragment.yaml')
+  const raw = readMetadata.sync(file)
+  const fragment = Raw.deserialize(raw, { terse: true }).document
+
+  const { document } = state
+
+  return state
+    .transform()
+    .insertFragmentByKey(document.key, 0, fragment)
+    .apply()
+}
diff --git a/test/transforms/fixtures/by-key/insert-fragment-by-key/start-of-target/input.yaml b/test/transforms/fixtures/by-key/insert-fragment-by-key/start-of-target/input.yaml
new file mode 100644
index 000000000..27f668fe2
--- /dev/null
+++ b/test/transforms/fixtures/by-key/insert-fragment-by-key/start-of-target/input.yaml
@@ -0,0 +1,7 @@
+
+nodes:
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: word
diff --git a/test/transforms/fixtures/by-key/insert-fragment-by-key/start-of-target/output.yaml b/test/transforms/fixtures/by-key/insert-fragment-by-key/start-of-target/output.yaml
new file mode 100644
index 000000000..deb0947fc
--- /dev/null
+++ b/test/transforms/fixtures/by-key/insert-fragment-by-key/start-of-target/output.yaml
@@ -0,0 +1,17 @@
+
+nodes:
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: fragment
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: fragment2
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        text: word