Quick answer
Natsuki is a girl name.
Meaning and history
From Japanese 菜 ( na ) meaning "vegetables, greens" and 月 ( tsuki ) meaning "moon". Alternatively, it can come from 夏 ( natsu ) meaning "summer" and 希 ( ki ) meaning "hope". Other kanji combinations can form this name as well.
Notes and context
Usage: japanese | Japanese Hiragana: なつき; Japanese Katakana: ナツキ