Gordon William Mills (15 May 1935 – 29 July 1986) was a successful London-based music industry manager and songwriter. He was born in Madras, British India and grew up in Trealaw in the Rhondda Valley, South Wales. During the 1960s and 1970s, he managed the careers of three highly successful musical artists - Tom Jones, Engelbert Humperdinck and Gilbert O'Sullivan. Mills was also a songwriter, penning hits for Cliff Richard, Johnny Kidd & the Pirates, Freddie and the Dreamers, the Applejacks, Paul Jones, Peter and Gordon and Tom Jones, most notably co-writing Jones's signature song "It's Not Unusual" with Les Reed.