Tunnel rat or similar can mean:

• Tunnel rat in the Vietnam War
• 1968 Tunnel Rats, a 2008 film
• Tunnel Rats (video game), a videogame based on the movie
• Tunnel Rat (G.I. Joe), a fictional character in the G.I. Joe universe
• Tunnel Rats (music group), an underground hip hop collective
  • Tunnel Rats (album), the third album by Tunnel Rats
• A rat in a tunnel

• Tian-zhen
• Tian Zhuangzhuang
• Tiao-kuai
• Tiaong
• Tiao Souphanouvong
• Tiao Yu T'ai
• Tiao Yu Tai
• Tiaoyutai
• Tiaoyutai Islands
• Tiara
• Tiara Jacquelina
• Tiara of Saitaferne
• Tiara of Saitaphernes
• Tiara of Saïtaphernes
• Tiara Records
• Tiaret
• Tiaret Province
• Tiaris bicolor
• Tiaroga
• Tiaroga cobitis
• Tias
• TI ASC
• Tias, Las Palmas
• Tia Texada
• Tiauyutai