The 1977 Mexico City WCT was a men's tennis tournament played on indoor carpet courts in Mexico City, Mexico. The event was part of the 1977 World Championship Tennis circuit. It was the second edition of the tournament and was held from 8 March until 13 February 1977. Unseeded Ilie Năstase won the singles title.[1]
Ilie Năstase defeated Wojciech Fibak, 4–6, 6–2, 7–6
Wojciech Fibak / Tom Okker defeated Ilie Năstase / Adriano Panatta, 6–2, 6–3