diff --git a/changelog_unreleased/markdown/16063.md b/changelog_unreleased/markdown/16063.md
new file mode 100644
index 000000000..d1b14cc8d
--- /dev/null
+++ b/changelog_unreleased/markdown/16063.md
@@ -0,0 +1,18 @@
+#### Add newline between markdown footnote definitions (#16063 by @Atema)
+
+<!-- prettier-ignore -->
+```md
+<!-- Input -->
+[^a]: Footnote A
+
+[^b]: Footnote B
+
+<!-- Prettier stable -->
+[^a]: Footnote A
+[^b]: Footnote B
+
+<!-- Prettier main -->
+[^a]: Footnote A
+
+[^b]: Footnote B
+```
diff --git a/src/language-markdown/printer-markdown.js b/src/language-markdown/printer-markdown.js
index 13f2830cf..5db008ba5 100644
--- a/src/language-markdown/printer-markdown.js
+++ b/src/language-markdown/printer-markdown.js
@@ -41,11 +41,7 @@ import {
  * @typedef {import("../document/builders.js").Doc} Doc
  */
 
-const SIBLING_NODE_TYPES = new Set([
-  "listItem",
-  "definition",
-  "footnoteDefinition",
-]);
+const SIBLING_NODE_TYPES = new Set(["listItem", "definition"]);
 
 function genericPrint(path, options, print) {
   const { node } = path;
@@ -405,7 +401,6 @@ function genericPrint(path, options, print) {
                     isFirst ? group([softline, print()]) : print(),
                 }),
               ),
-              path.next?.type === "footnoteDefinition" ? softline : "",
             ]),
       ];
     }
diff --git a/tests/format/markdown/footnoteDefinition/__snapshots__/format.test.js.snap b/tests/format/markdown/footnoteDefinition/__snapshots__/format.test.js.snap
index 35bded7b6..90d25d8d3 100644
--- a/tests/format/markdown/footnoteDefinition/__snapshots__/format.test.js.snap
+++ b/tests/format/markdown/footnoteDefinition/__snapshots__/format.test.js.snap
@@ -37,6 +37,7 @@ proseWrap: "never"
 
 =====================================output=====================================
 [^hello]: this is a long long long long long long long long long long long long long paragraph.
+
 [^world]: this is a long long long long long long long long long long long long long paragraph. this is a long long long long long long long long long long long long long paragraph.
 
 ================================================================================
@@ -55,6 +56,7 @@ proseWrap: "preserve"
 
 =====================================output=====================================
 [^hello]: this is a long long long long long long long long long long long long long paragraph.
+
 [^world]:
     this is a long long long long long long long long long long long long long paragraph.
     this is a long long long long long long long long long long long long long paragraph.
@@ -75,6 +77,7 @@ tabWidth: 3
 
 =====================================output=====================================
 [^hello]: this is a long long long long long long long long long long long long long paragraph.
+
 [^world]:
     this is a long long long long long long long long long long long long long paragraph.
     this is a long long long long long long long long long long long long long paragraph.
@@ -352,31 +355,45 @@ proseWrap: "always"
 
 =====================================output=====================================
 [^a]: a
+
 [^a]: a
+
 [^a]: a
+
 [^a]: > 123
+
 [^a]: a
+
 [^a]: > 123
+
 [^a]: a
+
 [^a]: a
+
 [^a]: a
 
 ---
 
 [^a]: a
+
 [^a]: a
+
 [^a]: a
+
 [^a]:
     > 123\\
     > 456
 
 [^a]: a
+
 [^a]:
     > 123\\
     > 456
 
 [^a]: a
+
 [^a]: a
+
 [^a]: a
 
 ================================================================================
@@ -415,31 +432,45 @@ proseWrap: "never"
 
 =====================================output=====================================
 [^a]: a
+
 [^a]: a
+
 [^a]: a
+
 [^a]: > 123
+
 [^a]: a
+
 [^a]: > 123
+
 [^a]: a
+
 [^a]: a
+
 [^a]: a
 
 ---
 
 [^a]: a
+
 [^a]: a
+
 [^a]: a
+
 [^a]:
     > 123\\
     > 456
 
 [^a]: a
+
 [^a]:
     > 123\\
     > 456
 
 [^a]: a
+
 [^a]: a
+
 [^a]: a
 
 ================================================================================
@@ -478,31 +509,45 @@ proseWrap: "preserve"
 
 =====================================output=====================================
 [^a]: a
+
 [^a]: a
+
 [^a]: a
+
 [^a]: > 123
+
 [^a]: a
+
 [^a]: > 123
+
 [^a]: a
+
 [^a]: a
+
 [^a]: a
 
 ---
 
 [^a]: a
+
 [^a]: a
+
 [^a]: a
+
 [^a]:
     > 123\\
     > 456
 
 [^a]: a
+
 [^a]:
     > 123\\
     > 456
 
 [^a]: a
+
 [^a]: a
+
 [^a]: a
 
 ================================================================================
@@ -541,31 +586,45 @@ tabWidth: 3
 
 =====================================output=====================================
 [^a]: a
+
 [^a]: a
+
 [^a]: a
+
 [^a]: > 123
+
 [^a]: a
+
 [^a]: > 123
+
 [^a]: a
+
 [^a]: a
+
 [^a]: a
 
 ---
 
 [^a]: a
+
 [^a]: a
+
 [^a]: a
+
 [^a]:
     > 123\\
     > 456
 
 [^a]: a
+
 [^a]:
     > 123\\
     > 456
 
 [^a]: a
+
 [^a]: a
+
 [^a]: a
 
 ================================================================================