Family name Khanai (Khanai 
, Ханай 
, ไคน) , in all the world, is a rare last name. The surname Khanai is characteristic of Trinidad and Tobago, where it is quite a rare surname, Thailand, where it is a rare surname, and Kyrgyzstan. Measured by absolute frequency, it most frequently occurs in India, Thailand, and Trinidad and Tobago. Likewise, Khanai is the forename as well as the last name.