diff --git a/lang/Makefile b/lang/Makefile
index b8624503e1ed..b47244907bdd 100644
--- a/lang/Makefile
+++ b/lang/Makefile
@@ -384,6 +384,7 @@
     SUBDIR += tclX
     SUBDIR += tolua
     SUBDIR += tolua++
+    SUBDIR += trealla-prolog
     SUBDIR += tuareg-mode.el
     SUBDIR += typstfmt
     SUBDIR += typstyle
diff --git a/lang/trealla-prolog/Makefile b/lang/trealla-prolog/Makefile
new file mode 100644
index 000000000000..e15215286902
--- /dev/null
+++ b/lang/trealla-prolog/Makefile
@@ -0,0 +1,46 @@
+PORTNAME=	trealla-prolog
+DISTVERSIONPREFIX=	v
+DISTVERSION=	2.68.20
+CATEGORIES=	lang
+
+MAINTAINER=	me@svmhdvn.name
+COMMENT=	Compact, efficient Prolog interpreter written in plain-old C
+WWW=		https://github.com/trealla-prolog/trealla/
+
+LICENSE=	MIT
+LICENSE_FILE=	${WRKSRC}/LICENSE
+
+USES=		gmake
+
+BUILD_DEPENDS=	xxd:sysutils/xxd
+
+PLIST_FILES=	bin/tpl
+
+TEST_TARGET=	test
+
+OPTIONS_DEFINE=		FFI READLINE SSL THREADS
+OPTIONS_DEFAULT=	FFI READLINE SSL THREADS
+
+FFI_DESC=	FFI support
+READLINE_DESC=	GNU readline support
+SSL_DESC=	SSL support
+THREADS_DESC=	Preemptive multithreading support
+
+FFI_LIB_DEPENDS=	libffi.so:devel/libffi
+FFI_MAKE_ARGS_OFF=	NOFFI=1
+
+READLINE_USES=		readline
+READLINE_MAKE_ARGS_OFF=	ISOCLINE=1
+
+SSL_USES=		ssl
+SSL_MAKE_ARGS_OFF=	NOSSL=1
+
+THREADS_MAKE_ARGS_OFF=	NOTHREADS=1
+
+USE_GITHUB=	yes
+GH_PROJECT=	trealla
+
+do-install:
+	${INSTALL_PROGRAM} ${WRKSRC}/tpl ${STAGEDIR}${PREFIX}/bin/
+
+.include <bsd.port.mk>
diff --git a/lang/trealla-prolog/distinfo b/lang/trealla-prolog/distinfo
new file mode 100644
index 000000000000..fe35666e5665
--- /dev/null
+++ b/lang/trealla-prolog/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1745272025
+SHA256 (trealla-prolog-trealla-v2.68.20_GH0.tar.gz) = 2fb4d08e02e75622c78e8f4a5edf5d7a76856b6f3e4c87db37c1b0c040db944a
+SIZE (trealla-prolog-trealla-v2.68.20_GH0.tar.gz) = 610669
diff --git a/lang/trealla-prolog/pkg-descr b/lang/trealla-prolog/pkg-descr
new file mode 100644
index 000000000000..5552f8e154ae
--- /dev/null
+++ b/lang/trealla-prolog/pkg-descr
@@ -0,0 +1,20 @@
+A compact, efficient Prolog interpreter with ISO Prolog aspirations.
+
+MIT licensed
+Integers & Rationals are unbounded
+Atoms are UTF-8 of unlimited length
+The default double-quoted representation is *chars* list
+Strings & slices are super-efficient (especially with mmap'd files)
+REPL with history
+Runs on Linux, Android, FreeBSD, macOS, and WebAssembly (WASI) & Go
+API for calling from C (or by using WASM from Go & JS)
+Foreign function interface (FFI) for calling out to user code
+Access SQLITE databases using builtin module (uses FFI)
+Concurrency via tasks / linda / futures / engines (generators)
+Pre-emptive multi-threading
+Blackboarding primitives
+...
+FFIs for GNU Scientific Library (GSL), SQLite, Raylib
+Delimited continuations ##EXPERIMENTAL##
+Rational trees ##EXPERIMENTAL##
+CLP(Z) ##EXPERIMENTAL##