diff --git a/dev-lang/tk/Manifest b/dev-lang/tk/Manifest
index 1bdce3e0a7bdc..4283dfcc4a524 100644
--- a/dev-lang/tk/Manifest
+++ b/dev-lang/tk/Manifest
@@ -2,3 +2,4 @@ DIST tk8.6.11.1-src.tar.gz 4496008 BLAKE2B d7bae2fa535411ad8620ec81cdc0b34a1206f
 DIST tk8.6.12-src.tar.gz 4515393 BLAKE2B 328522b7e1b4d291863db01ac93e18630f3984459d145a11d742f912a40d5634ffe4608760ce45f444903d45fb707bb48ecc3586913f0c2fde4664a402f6b862 SHA512 afe51eb3e2071640ebc57f9ee6979fe91ee7856df8d3c9d55ae70c470cdae2306d2feeb791f46258f529a5c4a07b53974a7574cf3594818cd4e99077b30c697b
 DIST tk8.6.13-src.tar.gz 4546848 BLAKE2B 5f00cf64feb7c7eb6739303c857dfabff4cbf4148c65462c2a5cc49cc8010fba950ffa7043101e98ded543a6c6e9b925dc1ee0e6e9031a240ae29b918f81060a SHA512 719aa6776bfdc814f817919a265d3f9d847782c9f0a5fc5c2ab139beeba921e6fde8c66e7e836d78f86f53c98a7df0e587f0b2f4b08cc5ce12eecbb7f1ab71a5
 DIST tk8.6.14-src.tar.gz 4510695 BLAKE2B 00b83a87b65317ca32228a11014bd9fe7cffb92089e152ca63a1e02ff23a5fc132b9336618f361692aa94ebf9e023cef492fafe39d51b9111feaec4934e8ae42 SHA512 756903dfa56cf77c7934bb3680c9bef6027f99196f4e6a2e823b85c342ca860cbb4b42154f576cc88f7f1265d28ce2d84ab5f52f848b16cca0cf9af4c770183f
+DIST tk8.6.15-src.tar.gz 4590766 BLAKE2B 41cf8917fcc7ca8a5d82d86bce0c8034fec5cead93caf9b5f18c4055e8a8f80f49f8afb506ceb965166e682902d404b0e0757f0dea1f61fb69ead3adf98c92b1 SHA512 1b4165748eb62b1ac875171036bec8c4d81ed903681806de78149e15b311c7258d9daf2bbc2a629c973a02362ad5df58157d0b90e2e54582590f62fbfc4b7d62
diff --git a/dev-lang/tk/tk-8.6.15.ebuild b/dev-lang/tk/tk-8.6.15.ebuild
new file mode 100644
index 0000000000000..275c05ea14c3b
--- /dev/null
+++ b/dev-lang/tk/tk-8.6.15.ebuild
@@ -0,0 +1,153 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+# Please bump with dev-lang/tcl!
+
+inherit autotools multilib-minimal multilib prefix toolchain-funcs virtualx
+
+MY_P="${PN}${PV/_beta/b}"
+
+DESCRIPTION="Tk Widget Set"
+HOMEPAGE="https://www.tcl.tk/"
+SRC_URI="https://downloads.sourceforge.net/tcl/${MY_P}-src.tar.gz"
+
+SPARENT="${WORKDIR}/${PN}$(ver_cut 1-3 ${PV})"
+S="${SPARENT}"/unix
+
+LICENSE="tcltk"
+SLOT="0/8.6"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x64-solaris"
+IUSE="debug +threads truetype aqua xscreensaver"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	!aqua? (
+		>=media-libs/fontconfig-2.10.92[${MULTILIB_USEDEP}]
+		>=x11-libs/libX11-1.6.2[${MULTILIB_USEDEP}]
+		>=x11-libs/libXt-1.1.4[${MULTILIB_USEDEP}]
+		truetype? ( >=x11-libs/libXft-2.3.1-r1[${MULTILIB_USEDEP}] )
+		xscreensaver? ( >=x11-libs/libXScrnSaver-1.2.2-r1[${MULTILIB_USEDEP}] )
+	)
+	~dev-lang/tcl-$(ver_cut 1-3):0=[${MULTILIB_USEDEP}]"
+DEPEND="${RDEPEND}
+	!aqua? ( x11-base/xorg-proto )"
+BDEPEND="virtual/pkgconfig"
+# Not bumped to 8.6
+#RESTRICT=test
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-8.6.10-multilib.patch
+	"${FILESDIR}"/${PN}-8.4.15-aqua.patch
+	"${FILESDIR}"/${PN}-8.6.9-conf.patch # Bug 125971
+	"${FILESDIR}"/${PN}-8.6.12-test.patch
+	"${FILESDIR}"/${PN}-8.6.14-test.patch
+)
+
+QA_CONFIG_IMPL_DECL_SKIP=(
+	stat64 opendir64 readdir64 rewinddir64 closedir64 # used on AIX
+)
+
+src_prepare() {
+	find \
+		"${SPARENT}"/compat/* \
+		-delete || die
+
+	pushd "${SPARENT}" &>/dev/null || die
+	default
+	popd &>/dev/null || die
+	eprefixify Makefile.in
+
+	# Make sure we use the right pkg-config, and link against fontconfig
+	# (since the code base uses Fc* functions).
+	sed \
+		-e 's/FT_New_Face/XftFontOpen/g' \
+		-e "s:\<pkg-config\>:$(tc-getPKG_CONFIG):" \
+		-e 's:xft freetype2:xft freetype2 fontconfig:' \
+		-i configure.in || die
+	rm configure || die
+
+	tc-export CC
+
+	sed \
+		-e '/chmod/s:555:755:g' \
+		-i Makefile.in || die
+
+	sed \
+		-e 's:-O[2s]\?::g' \
+		-i tcl.m4 || die
+
+	mv configure.{in,ac} || die
+
+	eautoconf
+
+	multilib_copy_sources
+}
+
+multilib_src_configure() {
+	if tc-is-cross-compiler ; then
+		export ac_cv_func_strtod=yes
+		export tcl_cv_strtod_buggy=1
+	fi
+
+	local mylibdir=$(get_libdir)
+
+	econf \
+		--with-tcl="${EPREFIX}/usr/${mylibdir}" \
+		$(use_enable threads) \
+		$(use_enable aqua) \
+		$(use_enable truetype xft) \
+		$(use_enable xscreensaver xss) \
+		$(use_enable debug symbols)
+}
+
+multilib_src_test() {
+	CI=1 virtx emake test
+}
+
+multilib_src_install() {
+	#short version number
+	local v1=$(ver_cut 1-2)
+	local mylibdir=$(get_libdir)
+
+	S= default
+
+	# normalize $S path, bug #280766 (pkgcore)
+	local nS="$(cd "${S}"; pwd)"
+
+	# fix the tkConfig.sh to eliminate refs to the build directory
+	# and drop unnecessary -L inclusion to default system libdir
+
+	sed \
+		-e "/^TK_BUILD_LIB_SPEC=/s:-L${S}-\w*\.\w* ::g" \
+		-e "/^TK_LIB_SPEC=/s:-L${EPREFIX}/usr/${mylibdir} *::g" \
+		-e "/^TK_SRC_DIR=/s:${SPARENT}:${EPREFIX}/usr/${mylibdir}/tk${v1}/include:g" \
+		-e "/^TK_BUILD_STUB_LIB_SPEC=/s:-L${S}-\w*\.\w* *::g" \
+		-e "/^TK_STUB_LIB_SPEC=/s:-L${EPREFIX}/usr/${mylibdir} *::g" \
+		-e "/^TK_BUILD_STUB_LIB_PATH=/s:${S}-\w*\.\w*:${EPREFIX}/usr/${mylibdir}:g" \
+		-e "/^TK_LIB_FILE=/s:'libtk${v1}..TK_DBGX..so':\"libk${v1}\$\{TK_DBGX\}.so\":g" \
+		-i "${ED}"/usr/${mylibdir}/tkConfig.sh || die
+	if use prefix && [[ ${CHOST} != *-darwin* ]] ; then
+		sed \
+			-e "/^TK_CC_SEARCH_FLAGS=/s|'$|:${EPREFIX}/usr/${mylibdir}'|g" \
+			-e "/^TK_LD_SEARCH_FLAGS=/s|'$|:${EPREFIX}/usr/${mylibdir}'|" \
+			-i "${ED}"/usr/${mylibdir}/tkConfig.sh || die
+	fi
+
+	# install private headers
+	insinto /usr/${mylibdir}/tk${v1}/include/unix
+	doins "${S}"/*.h
+	insinto /usr/${mylibdir}/tk${v1}/include/generic
+	doins "${SPARENT}"/generic/*.h
+	rm -f "${ED}"/usr/${mylibdir}/tk${v1}/include/generic/{tk,tkDecls,tkPlatDecls}.h || die
+
+	# install symlink for libraries
+	dosym libtk${v1}$(get_libname) /usr/${mylibdir}/libtk$(get_libname)
+	dosym libtkstub${v1}.a /usr/${mylibdir}/libtkstub.a
+
+	if multilib_is_native_abi; then
+		dosym wish${v1} /usr/bin/wish
+		dodoc "${SPARENT}"/{ChangeLog*,README.md,changes}
+	fi
+}