Violet Koo Lan-Chun
- Title: Violet Koo Lan-Chun
- Popularity: 0.445
- Known For: Acting
- Birthday: 1917-11-30
- Place of Birth: Shanghai, China
- Homepage:
- Also Known As: Lanjun Gu, 顧蘭君, Koo Lan-Kwan, Gu Lanjun, Gu Lan-Jun, 顾兰君, Вайолет Ку, Гу Ланьцзюнь, Ланьцзюнь Гу, Гу Лань-цзюнь, Вайолет Ку Лань-чунь