The 1975 Denver WCT, also known as the 1975 United Bank Tennis Classic for sponsorship reasons, was a men's professional tennis tournament.

It was held on indoor carpet courts in Denver, Colorado.

The tournament was part of the 1975 World Championship Tennis circuit, and was part of the Blue group circuit.

Unseeded Jimmy Connors, who qualified for the main draw to make his WCT debut, won the singles title and the accompanying $12,000 first prize.

[3][4] Jimmy Connors defeated Brian Gottfried 6–3, 6–4 Roy Emerson / Rod Laver defeated Bob Carmichael / Allan Stone 6–2, 3–6, 7–5