Chinatsu can be written using different kanji characters and can mean:
- 千夏, "thousand summers/thousandth summer"
- 知夏, "wise summer"
- 智夏, "intellect, summer"
- 千菜津, "thousand vegetables, harbor"
- 智菜津, "intellect, vegetable, harbor"
The name can also be written in hiragana or katakana.