diff --git a/translate/translate.go b/translate/translate.go
index 48736e1..4e5e313 100644
--- a/translate/translate.go
+++ b/translate/translate.go
@@ -631,6 +631,14 @@ func (t *Translator) paramExp(p *syntax.ParamExp, quoted bool) {
 		t.str(expr)
 		return
 	}
+
+	// $#, ${#} -> (count $argv)
+	switch param {
+	case "#", "$#", "${#}":
+		t.printf("(count $argv)")
+		return
+	}
+
 	if argvRe.MatchString(param) {
 		t.printf(`$argv[%s]`, param)
 		return
@@ -643,6 +651,7 @@ func (t *Translator) paramExp(p *syntax.ParamExp, quoted bool) {
 		}
 		param = spec
 	}
+
 	switch {
 	case p.Excl: // ${!a}
 		unsupported(p)
@@ -651,6 +660,8 @@ func (t *Translator) paramExp(p *syntax.ParamExp, quoted bool) {
 		switch p.Param.Value {
 		case "@", "*":
 			index = &syntax.Word{Parts: []syntax.WordPart{p.Param}}
+			t.printf("(count $argv)")
+			return
 		}
 		if index != nil {
 			if word, ok := index.(*syntax.Word); ok {
diff --git a/translate/translate_test.go b/translate/translate_test.go
index 840e152..c11ff74 100644
--- a/translate/translate_test.go
+++ b/translate/translate_test.go
@@ -356,6 +356,8 @@ until true; do
   echo 2
 done
 call $me
+echo $#
+echo ${#}
 echo ${#@}
 echo ${#cool[@]}
 echo ${#cool}
@@ -419,6 +421,8 @@ while not true
 end
 call $me
 echo (count $argv)
+echo (count $argv)
+echo (count $argv)
 echo (count $cool)
 echo (string length "$cool")
 set a (ok | string collect; or echo)