Mejiro may refer to:

• Mejiro, Tokyo, is a residential district of Toshima, Tokyo, Japan, centered at Mejiro Station of Yamanote Line
• Another name for the warbling white-eye
• Kurosaki Dojo – formerly known as Mejiro Gym, a Japanese kickboxing/MMA gym founded by Kenji Kurosaki
• Mejiro Gym, a Dutch kickboxing gym founded by Jan Plas
• Mejiro McQueen (Japanese: メジロマックイーン, April 3, 1987 – April 3, 2006) a Japanese Thoroughbred racehorse and sire
• Mejiro Station (目白駅, Mejiro-eki) is a railway station on the Yamanote Line in Toshima, Tokyo, Japan, operated by the East Japan Railway Company (JR East)
• Mejiro University (目白大学, Mejiro Daigaku) is a private university in Shinjuku, Tokyo, Japan
• Mejiro-no-Mori (目白の森, Mejiro-no-Mori) is a public wooded area in Toshima Ward, Tokyo, Japan
• Mejiroyamashita Station
• Juon Mejiro (目白 樹音, Mejiro Juon), a character from Japanese josei manga series Princess Jellyfish (Japanese: 海月姫, Hepburn: Kuragehime)