To may mean:

• .to, the country code top-level domain for Tonga
• "Metropolis" in Japan (都); Tokyo is a metropolis
• "Province" in Korea (도; 道: to is the McCune–Reischauer spelling of do); see Provinces of Korea
• Romanisation of the Japanese kana と and ト.
• Terrell Owens, a professional football player in the NFL