diff --git a/gnu/packages/tor.scm b/gnu/packages/tor.scm
index 6eb0c7609f0b..357b561874c7 100644
--- a/gnu/packages/tor.scm
+++ b/gnu/packages/tor.scm
@@ -879,3 +879,134 @@ (define-public torbrowser
                    #:assets torbrowser-assets
                    #:locales %torbrowser-locales
                    #:base-browser-version %torbrowser-version))
+
+;; To find the last version, look at
+;; https://mullvad.net/en/download/browser/linux.
+(define %mullvadbrowser-version "13.0.7")
+
+;; To find the last Firefox version, browse
+;; https://archive.torproject.org/tor-package-archive/mullvadbrowser/<%mullvadbrowser-version>
+;; There should be only one archive that starts with
+;; "src-firefox-mullvad-browser-".
+(define %mullvadbrowser-firefox-version "115.6.0esr-13.0-1-build1")
+
+;; Use the list in tor-browser-build/rbm.conf.
+(define %mullvadbrowser-locales
+  '("ar" "da" "de" "es-ES" "fa" "fi" "fr" "it" "ja" "ko" "my" "nb-NO" "nl"
+    "pl" "pt-BR" "ru" "sv-SE" "th" "tr" "zh-CN" "zh-TW"))
+
+;; See tor-browser-build/projects/translation/config.
+(define translation-mullvad-browser
+  (origin
+    (method git-fetch)
+    (uri (git-reference
+          (url "https://gitlab.torproject.org/tpo/translation.git")
+          (commit "57de1569da0e2c48fd999a13e555f6b522041993")))
+    (file-name "translation-mullvad-browser")
+    (sha256
+     (base32
+      "1q3979ac92c5mib573hx9w06x3hrfw7r52wzmj9r75sz2hhsmrq3"))))
+
+(define-public mullvadbrowser-assets
+  ;; This is a prebuilt Mullvad Browser from which we take the assets we need.
+  (package
+    (name "mullvadbrowser-assets")
+    (version %mullvadbrowser-version)
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://archive.torproject.org/tor-package-archive/mullvadbrowser/"
+         version "/mullvad-browser-linux-x86_64-" version ".tar.xz"))
+       (sha256
+        (base32
+         "1i7vf7cn6s5iajsp4999jpxxn8qblljrrmfs4nswmc2swdmi07gk"))))
+    (arguments
+     (list
+      #:install-plan
+      ''(("Browser" "." #:include-regexp
+          ("^\\./fonts/"
+           "^\\./fontconfig/fonts.conf"
+           ;; Mullvad Browser Extension
+           "^\\./distribution/extensions/\\{d19a89b9-76c1-4a61-bcd4-49e8de916403\\}.xpi"
+           )))))
+    (build-system copy-build-system)
+    (home-page "https://www.torproject.org")
+    (synopsis "Mullvad Browser assets")
+    (description "This package contains fonts and configuration files for
+Mullvad Browser.")
+    (license license:silofl1.1)))
+
+(define mullvadbrowser-base
+  (make-torbrowser #:moz-app-name "mullvadbrowser"
+                   #:moz-app-remotingname "Mullvad Browser"
+                   #:branding-directory "browser/branding/mb-release"
+                   #:assets mullvadbrowser-assets
+                   #:locales %mullvadbrowser-locales
+                   #:base-browser-version %mullvadbrowser-version))
+
+(define-public mullvadbrowser
+  (package
+    (inherit mullvadbrowser-base)
+    (name "mullvadbrowser")
+    (version %mullvadbrowser-version)
+    (source
+     (origin
+       (method url-fetch)
+       (uri
+        (string-append
+         "https://archive.torproject.org/tor-package-archive/mullvadbrowser/"
+         version "/src-firefox-mullvad-browser-"
+         %mullvadbrowser-firefox-version ".tar.xz"))
+       (sha256
+        (base32
+         "1hhmq0sh949vzs3mhh0pmpd2llgw149mv7kzzg2ylj8h2628y0px"))))
+    (arguments
+     (substitute-keyword-arguments (package-arguments mullvadbrowser-base)
+       ((#:phases phases)
+        #~(modify-phases #$phases
+            (add-after 'unpack 'ublock-private-allowed
+              (lambda _
+                (substitute* "toolkit/components/extensions/Extension.sys.mjs"
+                  ;; The code that gives the correct permission only applies to
+                  ;; distribution add-ons (see installDistributionAddon() in
+                  ;; XPIProvider.jsm).
+                  (("this.isNoScript")
+                   "this.isNoScript || this.id === \"uBlock0@raymondhill.net\""))))
+            ;; See tor-browser-build/projects/firefox/build.
+            (replace 'copy-torbrowser-locales
+              (lambda _
+                (for-each
+                 (lambda (lang)
+                   (system
+                    (format #f "cp -Lr ~a/~a .mozbuild/l10n-central/"
+                            #$translation-mullvad-browser lang)))
+                 '#$%mullvadbrowser-locales)))
+            (add-before 'build 'fix-profiles
+              ;; Otherwise the profile would change every time the install
+              ;; location changes, that is: at every package update.  These
+              ;; values are already the default values for Icecat and Tor
+              ;; Browser.
+              (lambda _
+                (substitute* "browser/moz.configure"
+                  (("\"MOZ_DEDICATED_PROFILES\", True")
+                   "\"MOZ_DEDICATED_PROFILES\", False")
+                  (("\"MOZ_BLOCK_PROFILE_DOWNGRADE\", True")
+                   "\"MOZ_BLOCK_PROFILE_DOWNGRADE\", False"))))
+            (add-after 'deploy-fonts 'deploy-extension
+              (lambda* (#:key inputs #:allow-other-keys)
+                (let ((lib (in-vicinity #$output "lib/mullvadbrowser")))
+                  ;; Mullvad Browser Extension (FIXME: package it)
+                  (copy-recursively
+                   (in-vicinity #$mullvadbrowser-assets "distribution")
+                   (in-vicinity lib "distribution")))))
+            (delete 'deploy-tor-assets)
+            (delete 'autoconfig-tor)))))
+    (inputs (package-inputs icecat-minimal))
+    (propagated-inputs
+     (list noscript/icecat
+           ublock-origin/icecat))
+    (synopsis "Privacy-focused browser")
+    (description "Mullvad Browser is a privacy-focused web browser designed to
+be used with a trustworthy VPN instead of the Tor Network.")))
