The 1977 Custom Credit Australian Indoor Championships was a men's tennis tournament played on indoor hard courts at the Hordern Pavilion in Sydney in Australia and was part of the 1977 Colgate-Palmolive Grand Prix. The tournament was held from 17 October through 23 October 1977. First-seeded Jimmy Connors won the singles title.
Finals
Singles
Jimmy Connors defeated Ken Rosewall 7–5, 6–4, 6–2
It was Connors' 6th singles title of the year and the 59th of his career.
Doubles
John Newcombe / Tony Roche defeated Ross Case / Geoff Masters 6–7, 6–3, 6–1
It was Newcombe's only title of the year and the 64th of his career. It was Roche's 2nd title of the year and the 25th of his career.