Hahnji Jang is a Korean-American costume designer and activist.

Hahnji was born in Michigan and moved to Daejeon, South Korea as a child. There she grew up in a family with a strong emphasis in political culture and awareness. She marched in her first anti-war rally at 9 and later continued her involvement as a youth leader of Amnesty International. Her current focus is on sustainable, secondhand, and ethically sourced clothing. As well as affordable styling for the unique.

Hahnji currently works in Brooklyn as both a costume designer and assistant on projects ranging from world premier's of translated Korean plays, The Public’s Mobile Shakespeare unit, to Broadway musicals.