diff --git a/buf/internal/toolchain.bzl b/buf/internal/toolchain.bzl
--- a/buf/internal/toolchain.bzl
+++ b/buf/internal/toolchain.bzl
@@ -119,6 +119,25 @@ def _buf_download_releases_impl(ctx):
     major_version = int(version_number[0])
     minor_version = int(version_number[1])
     os, cpu = _detect_host_platform(ctx)
+    if os == "freebsd":
+        if cpu == "amd64":
+            cpu = "x86_64"
+        for cmd in ["buf", "protoc-gen-buf-lint", "protoc-gen-buf-breaking"]:
+            bin_path = ctx.which(cmd)
+            if not bin_path:
+                fail("{} not found in PATH. Install devel/buf.".format(cmd))
+            ctx.symlink(bin_path, cmd)
+        ctx.file("WORKSPACE", "workspace(name = \"{name}\")".format(name = ctx.name))
+        ctx.file("toolchain.bzl", _TOOLCHAIN_FILE)
+        ctx.file(
+            "BUILD",
+            _BUILD_FILE.format(
+                os = os,
+                cpu = cpu,
+                rules_buf_repo_name = Label("//buf/repositories.bzl").workspace_name,
+            ),
+        )
+        return
     if os not in ["linux", "darwin", "windows"] or cpu not in ["arm64", "amd64", "ppc64le", "s390x"]:
         fail("Unsupported operating system or cpu architecture ")
     if os == "linux" and cpu == "arm64":