diff --git a/news/changelog-1.9.md b/news/changelog-1.9.md
index 10d7f15b4e2..2304f100621 100644
--- a/news/changelog-1.9.md
+++ b/news/changelog-1.9.md
@@ -52,6 +52,7 @@ All changes included in 1.9:
   - Two-column layout now uses `set page(columns:)` instead of `columns()` function, fixing compatibility with landscape sections.
   - Title block now properly spans both columns in multi-column layouts.
 - ([#13870](https://github.com/quarto-dev/quarto-cli/issues/13870)): Add support for `alt` attribute on cross-referenced equations for improved accessibility. (author: @mcanouil)
+- ([#13917](https://github.com/quarto-dev/quarto-cli/issues/13917)): Fix resource path resolution for Typst format extensions when document is in a project subdirectory. Extension-resolved paths are now correctly detected and not double-prefixed with the project offset.
 
 ### `pdf`
 
diff --git a/src/resources/filters/quarto-post/typst-brand-yaml.lua b/src/resources/filters/quarto-post/typst-brand-yaml.lua
index f23190d727c..5fb1da437e3 100644
--- a/src/resources/filters/quarto-post/typst-brand-yaml.lua
+++ b/src/resources/filters/quarto-post/typst-brand-yaml.lua
@@ -320,9 +320,17 @@ function render_typst_brand_yaml()
           imageFilename = imageFilename and imageFilename:gsub('\\_', '_')
         else
           -- backslashes need to be doubled for Windows
+          -- Only apply project offset for brand logo paths (project-relative).
+          -- Extension-resolved paths (containing _extensions or starting with ..)
+          -- are already input-relative and should not have the offset applied.
+          -- See #13745 for the same pattern applied to font-paths.
           if imageFilename[1] ~= "/" and _quarto.projectOffset() ~= "." then
-            local offset = _quarto.projectOffset()
-            imageFilename = pandoc.path.join({offset, imageFilename})
+            local is_extension_path = string.find(imageFilename, "_extensions") or
+              string.sub(imageFilename, 1, 2) == ".."
+            if not is_extension_path then
+              local offset = _quarto.projectOffset()
+              imageFilename = pandoc.path.join({offset, imageFilename})
+            end
           end
           imageFilename = string.gsub(imageFilename, '\\', '\\\\')
         end
diff --git a/tests/docs/smoke-all/typst/extension-logo/.gitignore b/tests/docs/smoke-all/typst/extension-logo/.gitignore
new file mode 100644
index 00000000000..ad293093b07
--- /dev/null
+++ b/tests/docs/smoke-all/typst/extension-logo/.gitignore
@@ -0,0 +1,2 @@
+/.quarto/
+**/*.quarto_ipynb
diff --git a/tests/docs/smoke-all/typst/extension-logo/_extensions/issue/_extension.yml b/tests/docs/smoke-all/typst/extension-logo/_extensions/issue/_extension.yml
new file mode 100644
index 00000000000..e3ad0e2b01d
--- /dev/null
+++ b/tests/docs/smoke-all/typst/extension-logo/_extensions/issue/_extension.yml
@@ -0,0 +1,8 @@
+title: Issue Extension
+author: Test
+version: "1.0.0"
+quarto-required: ">=1.3.0"
+contributes:
+  formats:
+    typst:
+      logo: quarto-icon.svg
diff --git a/tests/docs/smoke-all/typst/extension-logo/_extensions/issue/quarto-icon.svg b/tests/docs/smoke-all/typst/extension-logo/_extensions/issue/quarto-icon.svg
new file mode 100644
index 00000000000..6cded214279
--- /dev/null
+++ b/tests/docs/smoke-all/typst/extension-logo/_extensions/issue/quarto-icon.svg
@@ -0,0 +1 @@
+<svg data-v-423bf9ae="" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 225.49082756327377 180" class="iconAbove"><!----><!----><!----><g data-v-423bf9ae="" id="541e95f4-fe35-4073-bfda-8cdf8680d180" fill="white" transform="matrix(4.788507683852314,0,0,4.788507683852314,-5.554669589324504,102.40082993583795)"><path d="M7.01 13.33L1.50 13.33L1.50 13.33Q1.16 13.33 1.16 12.95L1.16 12.95L1.16 3.90L1.16 3.90Q1.16 3.53 1.50 3.53L1.50 3.53L2.13 3.53L2.13 3.53Q2.47 3.53 2.47 3.90L2.47 3.90L2.47 12.21L7.01 12.21L7.01 12.21Q7.38 12.21 7.38 12.52L7.38 12.52L7.38 13.02L7.38 13.02Q7.38 13.33 7.01 13.33L7.01 13.33ZM8.35 9.74L8.35 9.74L8.35 9.74Q8.35 8.05 9.19 7.04L9.19 7.04L9.19 7.04Q10.04 6.04 11.62 6.04L11.62 6.04L11.62 6.04Q12.93 6.04 13.80 6.96L13.80 6.96L13.80 6.96Q14.66 7.88 14.66 9.89L14.66 9.89L14.66 9.89Q14.66 10.20 14.38 10.20L14.38 10.20L9.62 10.20L9.62 10.20Q9.73 11.52 10.33 12.03L10.33 12.03L10.33 12.03Q10.92 12.55 11.68 12.55L11.68 12.55L11.68 12.55Q12.47 12.55 12.89 12.28L12.89 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9.74ZM28.98 9.74L28.98 9.74L28.98 9.74Q28.98 8.13 29.83 7.09L29.83 7.09L29.83 7.09Q30.68 6.04 32.32 6.04L32.32 6.04L32.32 6.04Q33.96 6.04 34.81 7.09L34.81 7.09L34.81 7.09Q35.66 8.13 35.66 9.74L35.66 9.74L35.66 9.74Q35.66 11.35 34.81 12.40L34.81 12.40L34.81 12.40Q33.96 13.45 32.32 13.45L32.32 13.45L32.32 13.45Q30.68 13.45 29.83 12.40L29.83 12.40L29.83 12.40Q28.98 11.35 28.98 9.74ZM30.25 9.74L30.25 9.74L30.25 9.74Q30.25 11.18 30.82 11.87L30.82 11.87L30.82 11.87Q31.38 12.56 32.32 12.56L32.32 12.56L32.32 12.56Q33.26 12.56 33.82 11.87L33.82 11.87L33.82 11.87Q34.39 11.18 34.39 9.74L34.39 9.74L34.39 9.74Q34.39 8.31 33.82 7.62L33.82 7.62L33.82 7.62Q33.26 6.92 32.32 6.92L32.32 6.92L32.32 6.92Q31.38 6.92 30.82 7.62L30.82 7.62L30.82 7.62Q30.25 8.31 30.25 9.74ZM38.11 13.33L37.52 13.33L37.52 13.33Q37.21 13.33 37.21 13.02L37.21 13.02L37.21 6.46L37.21 6.46Q37.21 6.15 37.52 6.15L37.52 6.15L38.10 6.15L38.10 6.15Q38.40 6.15 38.40 6.46L38.40 6.46L38.40 7.28L38.43 7.28L38.43 7.28Q38.76 6.67 39.20 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21.68-27.616zM65.711 62.394l14.841-4.731 1.509-12.532-15.899 2.095zM72.07 44.502l10.988-1.417 1.581-10.278-8.079-.373L64.549 1l8.43 30.967z"></path><path d="M87.413 31.294l1.256-9.506-9.544-2.694L64.549 1l14.483 22.437-.422 7z"></path></g></g><!----></svg>
\ No newline at end of file
diff --git a/tests/docs/smoke-all/typst/extension-logo/_quarto.yml b/tests/docs/smoke-all/typst/extension-logo/_quarto.yml
new file mode 100644
index 00000000000..3f61fada83a
--- /dev/null
+++ b/tests/docs/smoke-all/typst/extension-logo/_quarto.yml
@@ -0,0 +1,2 @@
+project:
+  title: "Extension Logo Test"
diff --git a/tests/docs/smoke-all/typst/extension-logo/sub/template.qmd b/tests/docs/smoke-all/typst/extension-logo/sub/template.qmd
new file mode 100644
index 00000000000..10c5bad4c5f
--- /dev/null
+++ b/tests/docs/smoke-all/typst/extension-logo/sub/template.qmd
@@ -0,0 +1,14 @@
+---
+title: "Extension Logo Test"
+format: issue-typst
+_quarto:
+  tests:
+    typst:
+      ensureTypstFileRegexMatches:
+        -
+          - 'image\("\.\./(_extensions|_extensions)(/|\\\\)issue(/|\\\\)quarto-icon\.svg"'
+        -
+          - 'image\("\.\./\.\./(_extensions|_extensions)'
+---
+
+This is a test document that uses a Typst format extension with a logo.