diff --git a/news/changelog-1.9.md b/news/changelog-1.9.md
index 17971c59d6c..9a19a3ca453 100644
--- a/news/changelog-1.9.md
+++ b/news/changelog-1.9.md
@@ -62,6 +62,7 @@ All changes included in 1.9:
 - ([#13547](https://github.com/quarto-dev/quarto-cli/issues/13547))`cookie-content: { type: express }` is now the default. Previously it was `type: implied`. It now means this will block cookies until the user expressly agrees to allow them (or continue blocking them if the user doesn't agree).
 - ([#13570](https://github.com/quarto-dev/quarto-cli/pull/13570)): Replace Twitter with Bluesky in default blog template and documentation examples. New blog projects now include Bluesky social links instead of Twitter.
 - ([#13716](https://github.com/quarto-dev/quarto-cli/issues/13716)): Fix draft pages showing blank during preview when pre-render scripts are configured.
+- ([#13847](https://github.com/quarto-dev/quarto-cli/pull/13847)): Open graph title with markdown is now processed correctly. (author: @mcanouil)
 
 ### `book`
 
diff --git a/src/project/types/website/website-meta.ts b/src/project/types/website/website-meta.ts
index 7f5afe68658..b37985436ef 100644
--- a/src/project/types/website/website-meta.ts
+++ b/src/project/types/website/website-meta.ts
@@ -506,7 +506,7 @@ function metaMarkdownPipeline(format: Format, extras: FormatExtras) {
       if (renderedEl) {
         // Update the document title
         const el = doc.querySelector(
-          `meta[name="og:site_name"]`,
+          `meta[property="og:site_name"]`,
         );
         if (el) {
           el.setAttribute("content", renderedEl.innerText);
diff --git a/tests/docs/smoke-all/2026/01/06/13847/.gitignore b/tests/docs/smoke-all/2026/01/06/13847/.gitignore
new file mode 100644
index 00000000000..ad293093b07
--- /dev/null
+++ b/tests/docs/smoke-all/2026/01/06/13847/.gitignore
@@ -0,0 +1,2 @@
+/.quarto/
+**/*.quarto_ipynb
diff --git a/tests/docs/smoke-all/2026/01/06/13847/_quarto.yml b/tests/docs/smoke-all/2026/01/06/13847/_quarto.yml
new file mode 100644
index 00000000000..2df8ca97fcf
--- /dev/null
+++ b/tests/docs/smoke-all/2026/01/06/13847/_quarto.yml
@@ -0,0 +1,17 @@
+project:
+  type: website
+
+website:
+  title: "Quarto CLI {{< var version >}}"
+  open-graph: true
+  navbar:
+    left:
+      - href: index.qmd
+        text: Home
+    right:
+      - icon: github
+        href: https://github.com/
+
+format:
+  html:
+    theme: cosmo
diff --git a/tests/docs/smoke-all/2026/01/06/13847/_variables.yml b/tests/docs/smoke-all/2026/01/06/13847/_variables.yml
new file mode 100644
index 00000000000..2ef3d523ab5
--- /dev/null
+++ b/tests/docs/smoke-all/2026/01/06/13847/_variables.yml
@@ -0,0 +1 @@
+version: 1.0.0
diff --git a/tests/docs/smoke-all/2026/01/06/13847/index.qmd b/tests/docs/smoke-all/2026/01/06/13847/index.qmd
new file mode 100644
index 00000000000..746cb5a7394
--- /dev/null
+++ b/tests/docs/smoke-all/2026/01/06/13847/index.qmd
@@ -0,0 +1,13 @@
+---
+title: "PR 13847: open graph metadata"
+_quarto:
+  render-project: true
+  tests:
+    html:
+      ensureHtmlElements:
+        -
+          - 'meta[property="og:site_name"][content*="Quarto CLI 1.0.0"]'
+        - []
+---
+
+This test check that the website title is correctly resolved when used in open graph site name, including when using a shortcode.
\ No newline at end of file