diff --git a/AUTHORS.rst b/AUTHORS.rst
index 707c77aec04..6b244a04b92 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -108,6 +108,7 @@ Contributors
 * Steve Piercy -- documentation improvements
 * Szymon Karpinski -- intersphinx improvements
 * \T. Powers -- HTML output improvements
+* Taiki Ohno -- bug fixes in search results
 * Taku Shimizu -- epub3 builder
 * Tamika Nomara -- bug fixes
 * Thomas Lamb -- linkcheck builder
diff --git a/CHANGES.rst b/CHANGES.rst
index f0f94fda396..fec973c7286 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -137,6 +137,8 @@ Bugs fixed
 * #14004: Fix :confval:`autodoc_type_aliases` when they appear in PEP 604
   union syntax (``Alias | Type``).
   Patch by Tamika Nomara.
+* #14028: Fix the encoding of URLs in search results.
+  Patch by Taiki Ohno.
 
 
 Testing
diff --git a/sphinx/themes/basic/static/searchtools.js b/sphinx/themes/basic/static/searchtools.js
index 5a7628a18a2..83c5fcd96b1 100644
--- a/sphinx/themes/basic/static/searchtools.js
+++ b/sphinx/themes/basic/static/searchtools.js
@@ -89,7 +89,8 @@ const _displayItem = (item, searchTerms, highlightTerms) => {
     linkUrl = docName + docLinkSuffix;
   }
   let linkEl = listItem.appendChild(document.createElement("a"));
-  linkEl.href = linkUrl + anchor;
+  const encodedLinkUrl = linkUrl.split("/").map(encodeURIComponent).join("/");
+  linkEl.href = encodedLinkUrl + anchor;
   linkEl.dataset.score = score;
   linkEl.innerHTML = title;
   if (descr) {