diff --git a/src/cmd/go/internal/tool/tool.go b/src/cmd/go/internal/tool/tool.go
index f07bdf50873461..36bf9838720586 100644
--- a/src/cmd/go/internal/tool/tool.go
+++ b/src/cmd/go/internal/tool/tool.go
@@ -287,6 +287,7 @@ func buildAndRunModtool(ctx context.Context, tool string, args []string) {
 	pkgOpts := load.PackageOpts{MainOnly: true}
 	p := load.PackagesAndErrors(ctx, pkgOpts, []string{tool})[0]
 	p.Internal.OmitDebug = true
+	p.Internal.ExeName = path.Base(p.ImportPath)
 
 	a1 := b.LinkAction(work.ModeBuild, work.ModeBuild, p)
 	a1.CacheExecutable = true
diff --git a/src/cmd/go/testdata/script/tool_exename.txt b/src/cmd/go/testdata/script/tool_exename.txt
new file mode 100644
index 00000000000000..dc289b47644cbc
--- /dev/null
+++ b/src/cmd/go/testdata/script/tool_exename.txt
@@ -0,0 +1,32 @@
+[short] skip 'runs go build'
+
+# First run: executable for bar is not cached.
+# Make sure it's not called a.out
+go tool bar
+stdout 'my name is: bar'$GOEXE
+! stdout 'a.out'
+
+# Second run: executable is cached. Make sure it
+# has the right name.
+go tool bar
+stdout 'my name is: bar'$GOEXE
+! stdout 'a.out'
+
+-- go.mod --
+module example.com/foo
+
+go 1.24
+
+tool example.com/foo/bar
+-- bar/bar.go --
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+func main() {
+	fmt.Println("my name is:", filepath.Base(os.Args[0]))
+}
\ No newline at end of file