Zwei (German: "two") may refer to:

• Zwei (band), a Japanese duo band

• ZWEI, a text editor

• Zwei: The Arges Adventure, 2001 video game

• Zwei: The Ilvard Insurrection, 2008 video game

• Zwei, a team in Infinite Ryvius anime series

• Zwei, a character in Phantom of Inferno anime series

• Zwei, a Pembroke Welsh Corgi in the anime series RWBY.

• Project Zwai, the codename for the video game The Evil Within