Kerry Michael Chater (August 7, 1945 – February 4, 2022) was a Canadian musician and songwriter who was best known as a member of Gary Puckett & The Union Gap.

A bass player, in the mid-'60s he joined a band called The Progressives with Doug Ingle (keyboards), Gary 'Mutha' Whitem (sax) and Danny Weis (guitar).

By 1966, Ingle, and Weis went off to form Iron Butterfly and Chater and Whitem joined The Outcasts with their friend Gary Puckett and others; this eventually became The Union Gap,[1] which was signed by Columbia Records in 1967.

Chater did much of the arranging for the live shows,[citation needed] wrote or co-wrote some of the album cuts and b-sides, and on rare occasions did a shared lead vocal.

Chater and Gary "Mutha" Withem, the original keyboardist, left the band in 1970 as its popularity was declining.