diff --git a/usr.sbin/crash/Makefile b/usr.sbin/crash/Makefile
index 3759bf71a041..7596b51553f8 100644
--- a/usr.sbin/crash/Makefile
+++ b/usr.sbin/crash/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.49 2023/07/09 17:10:47 riastradh Exp $
+#	$NetBSD: Makefile,v 1.50 2023/11/22 02:01:07 thorpej Exp $
 
 PROG=		crash
 MAN=		crash.8
@@ -21,11 +21,14 @@ DPADD+=	${LIBUTIL} ${LIBKVM} ${LIBEDIT} ${LIBTERMINFO}
     || ${MACHINE_CPU} == "arm" \
     || ${MACHINE_CPU} == "aarch64" \
     || ${MACHINE_CPU} == "mips" \
+    || ${MACHINE_ARCH} == "alpha" \
     || ${MACHINE_ARCH} == "m68k" \
     || ${MACHINE_ARCH} == "powerpc" \
     || ${MACHINE_ARCH} == "powerpc64"
 SRCS+=	db_trace.c
-.if ${MACHINE_CPU} == "mips"
+.if ${MACHINE_ARCH} == "alpha"
+SRCS+=	db_interface.c
+.elif ${MACHINE_CPU} == "mips"
 SRCS+=	db_interface.c mips_stacktrace.c
 CPPFLAGS+=	-DDDB
 .elif ${MACHINE_ARCH} != "m68k" \
diff --git a/usr.sbin/crash/arch/alpha.c b/usr.sbin/crash/arch/alpha.c
new file mode 100644
index 000000000000..2ec87514be9f
--- /dev/null
+++ b/usr.sbin/crash/arch/alpha.c
@@ -0,0 +1,72 @@
+/*	$NetBSD: alpha.c,v 1.1 2023/11/22 02:01:07 thorpej Exp $	*/
+
+/*-
+ * Copyright (c) 2023 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__RCSID("$NetBSD: alpha.c,v 1.1 2023/11/22 02:01:07 thorpej Exp $");
+#endif /* not lint */
+
+#include <kvm.h>
+#include <nlist.h>
+#include <err.h>
+#include <stdlib.h>
+
+#include <ddb/ddb.h>
+
+#include <machine/frame.h>
+#include <machine/pcb.h>
+#include <alpha/db_machdep.h>
+
+#include "extern.h"
+
+struct pcb	pcb;
+struct trapframe ddb_regs;
+
+extern db_alpha_nlist db_alpha_nl[];
+
+void
+db_mach_init(kvm_t *kd)
+{
+
+	if (kvm_nlist(kd, db_alpha_nl) == -1) {
+		errx(EXIT_FAILURE, "kvm_nlist: %s", kvm_geterr(kd));
+	}
+	if ((size_t)kvm_read(kd, db_alpha_nl[SYM_dumppcb].n_value,
+			     &pcb, sizeof(pcb)) != sizeof(pcb)) {
+		warnx("cannot read dumppcb: %s", kvm_geterr(kd));
+	}
+
+	memcpy(&ddb_regs.tf_regs[FRAME_S0],
+	    &pcb.pcb_context[0], 7 * sizeof(unsigned long));
+	ddb_regs.tf_regs[FRAME_RA] = pcb.pcb_context[7];
+	ddb_regs.tf_regs[FRAME_SP] = pcb.pcb_hw.apcb_ksp;
+	ddb_regp = &ddb_regs;
+}