はもちろん
(Wa mochiron)
not to mention / of course / needless to say.
Connection rules
- +Noun + はもちろん / はもちろんのこと.
- +X is the obvious case; Y is the additional / emphatic case.
- +Often paired with も in the Y clause: 日本人はもちろん、外国人も楽しめる.
Examples
1.
日本人はもちろん、外国人にも人気だ。

Nipponjin wa mochiron, gaikoku jin ni mo ninki da.
It's popular not only with Japanese people but also with foreigners.
「not to mention / of course / needless to say」
2.
子供はもちろんのこと、大人も楽しめる。

Kodomo wa mochiron no koto, otona mo tanoshimeru.
Needless to say children, but adults can also enjoy it.
「not to mention / of course / needless to say」
Practice
This restaurant is popular for its food, of course, but also for its interior design.
このレストランは___、インテリアも素敵で人気がある。
Romaji also accepted