T61

T61, T.61 or T-61 may refer to:
 * Allison T61, a turboprop engine
 * BAE Hualcopo, a tank landing ship of the Ecuadorean Navy
 * Cooper T61, a British sports racing car
 * INS Trinkat (T61), a patrol vessel of the Indian Navy
 * ITU T.61, a character set standard
 * Lola T61, a British Formula Two racing car
 * Slingsby T.61 Falke, a British glider
 * thesixtyone, a music discovery website
 * ThinkPad T61, a laptop computer
 * T61 (classification), an IPC para-athletics classification for athletes with limb differences