diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index 149ea5179439..dc69eeaf46ca 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -10247,6 +10247,15 @@
     githubId = 95194;
     name = "Mauricio Scheffer";
   };
+  mawis = {
+    email = "m@tthias.eu";
+    github = "mawis";
+    githubId = 2042030;
+    name = "Matthias Wimmer";
+    keys = [{
+      fingerprint = "CAEC A12D CE23 37A6 6DFD  17B0 7AC7 631D 70D6 C898";
+    }];
+  };
   maxbrunet = {
     email = "max@brnt.mx";
     github = "maxbrunet";
diff --git a/pkgs/servers/sip/kamailio/default.nix b/pkgs/servers/sip/kamailio/default.nix
new file mode 100644
index 000000000000..c4677e37f1f2
--- /dev/null
+++ b/pkgs/servers/sip/kamailio/default.nix
@@ -0,0 +1,76 @@
+{ callPackage
+, fetchurl
+, lib
+, pkgs
+, stdenv
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "kamailio";
+  version = "5.7.1";
+
+  meta = {
+    description = "Fast and flexible SIP server, proxy, SBC, and load balancer";
+    homepage = "https://www.kamailio.org/";
+    license = lib.licenses.gpl2Only;
+    maintainers = with lib.maintainers; [ mawis ];
+    platforms = lib.platforms.linux;
+  };
+
+  src = fetchurl {
+    url = "https://www.kamailio.org/pub/kamailio/5.7.1/src/kamailio-${finalAttrs.version}_src.tar.gz";
+    hash = "sha256-TkrAj5ohwzJ959UvXNwaMmcIwTRowUitP9/UNQ8D1zw=";
+  };
+
+  buildInputs = with pkgs; [
+    bison
+    flex
+    gnugrep
+    json_c.dev
+    libevent.dev
+    libxml2.dev
+    mariadb-connector-c.dev
+    pcre.dev
+  ];
+
+  nativeBuildInputs = with pkgs; [
+    pkg-config
+    which
+  ];
+
+  configurePhase = ''
+    runHook preConfigure
+
+    make PREFIX="$out" include_modules="db_mysql dialplan jsonrpcc json lcr presence presence_conference presence_dialoginfo presence_mwi presence_profile presence_reginfo presence_xml pua pua_bla pua_dialoginfo pua_json pua_reginfo pua_rpc pua_usrloc pua_xmpp regex rls xcap_client xcap_server" cfg
+
+    runHook postConfigure
+  '';
+
+  buildPhase = ''
+    runHook preBuild
+
+    make MYSQLCFG=${pkgs.mariadb-connector-c.dev}/bin/mariadb_config all
+
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    make MYSQLCFG=${pkgs.mariadb-connector-c.dev}/bin/mariadb_config install
+    echo 'MD5="${pkgs.coreutils}/bin/md5sum"' >> $out/etc/kamailio/kamctlrc
+    echo 'AWK="${pkgs.gawk}/bin/awk"' >> $out/etc/kamailio/kamctlrc
+    echo 'GDB="${pkgs.gdb}/bin/gdb"' >> $out/etc/kamailio/kamctlrc
+    echo 'GREP="${pkgs.gnugrep}/bin/grep "' >> $out/etc/kamailio/kamctlrc
+    echo 'EGREP="${pkgs.gnugrep}/bin/grep -E"' >> $out/etc/kamailio/kamctlrc
+    echo 'SED="${pkgs.gnused}/bin/sed"' >> $out/etc/kamailio/kamctlrc
+    echo 'LAST_LINE="${pkgs.coreutils}/bin/tail -n 1"' >> $out/etc/kamailio/kamctlrc
+    echo 'EXPR="${pkgs.gnugrep}/bin/expr"' >> $out/etc/kamailio/kamctlrc
+
+    runHook postInstall
+  '';
+
+  passthru.tests = {
+    kamailio-bin = callPackage ./test-kamailio-bin {};
+  };
+})
diff --git a/pkgs/servers/sip/kamailio/test-kamailio-bin/default.nix b/pkgs/servers/sip/kamailio/test-kamailio-bin/default.nix
new file mode 100644
index 000000000000..5d6eea600959
--- /dev/null
+++ b/pkgs/servers/sip/kamailio/test-kamailio-bin/default.nix
@@ -0,0 +1,24 @@
+{ stdenv, kamailio }:
+
+stdenv.mkDerivation {
+  name = "kamailio-bin-test";
+  meta.timeout = 60;
+  src = ./.;
+
+  dontInstall = true;
+
+  buildPhase = ''
+    mkdir $out
+
+    ${kamailio}/bin/kamailio -v > $out/kamailio-stdout
+    ${kamailio}/bin/kamcmd -h > $out/kamcmd-stdout
+    (${kamailio}/bin/kamctl help || exit 0) > $out/kamctl-stdout
+  '';
+
+  doCheck = true;
+  checkPhase = ''
+    grep -q "version: kamailio" $out/kamailio-stdout || (echo "ERROR: kamailio cannot be run"; exit 1)
+    grep -q "version: kamcmd" $out/kamcmd-stdout || (echo "ERROR: kamcmd cannot be run"; exit 1)
+    grep -q "add a new subscriber" $out/kamctl-stdout || (echo "ERROR: kamctl cannot be run"; exit 1)
+  '';
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index ae6f3be59fef..87235372d1f9 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -25940,6 +25940,8 @@ with pkgs;
 
   jitsi-videobridge = callPackage ../servers/jitsi-videobridge { };
 
+  kamailio = callPackage ../servers/sip/kamailio { };
+
   kanidm = callPackage ../servers/kanidm { };
 
   kapowbang = callPackage ../servers/kapowbang { };