Tomo may refer to:
- TomoTherapy, a manufacturer of medical equipment
- Tomo River, river in Colombia
- Yeshiva Toras Moshe, a yeshiva in Israel often called To-Mo
- Sinkhole, in New Zealand any hole in the ground could be called a Tomo, it is particularly used for pot holes in Karst country.
In fiction:
- Tomo, a character from Star Wars Episode I: The Phantom Menace (video game)
- Tomo Takino, a character from Azumanga Daioh
- Tomo (Seiryu Seishi), a character from the manga Fushigi Yuugi
Persons with the surname Tomo:
- Bung Tomo or Sutomo, an Indonesian military leader during the Indonesian National Revolution
Persons with the given name Tomo:
- Tomo Križnar, Slovene activist and writer
- Tomo Maretić, Croatian linguist
- Tomo Matsumoto, Japanese shōjo manga artist
- Tomo Miličević, lead guitarist of 30 Seconds to Mars
- Tomo Morimoto, Japanese long-distance runner
- Tomo Nakagawa, Japanese professional wrestler
- Tomo Ohka, Japanese baseball pitcher
- Tom Osander, referred to as "Tomo", drummer in the bands of Damien Rice and Lisa Hannigan
- Tomo Šokota, Croatian footballer
- Tomo Vladimirski, Macedonian painter
- Tomo Yasuda, Japanese American electronic musician