Kostychany (Ukrainian: Костичани, Romanian: Costiceni) is a commune in Chernivtsi Raion, Chernivtsi Oblast (province) of western Ukraine. The commune is composed of three villages: Dumeny (Думени; Dumeni), Kostychany and Novoivankivtsi (Новоіванківці; Vancicăuții Mici). It belongs to Vanchykivtsi rural hromada, one of the hromadas of Ukraine.

Until 18 July 2020, Kostychany belonged to Novoselytsia Raion, and it was historically a part of Bessarabia. The raion was abolished in July 2020 as part of the administrative reform of Ukraine, which reduced the number of raions of Chernivtsi Oblast to three. The area of Novoselytsia Raion was split between Chernivtsi and Dnistrovskyi Raions, with Kostychany being transferred to Chernivtsi Raion. In 2001, 95.36% of the inhabitants spoke Romanian as their native language, with Ukrainian (2.87%) and Russian (1.69%) speakers in the minority.

Kostychany village was first officially attested in a document dated 1619.

• Toadere Captari [ro] (1923–1995), folk musician
• Eugen Pâslaru (1950–2018), politician
• Ion Vatamanu (1937–1993), writer and politician

48°13′26″N 26°29′55″E / 48.22389°N 26.49861°E / 48.22389; 26.49861