:1978 Custom Credit Australian Indoor Championships

{{Use dmy dates|date=December 2021}}

{{Use Australian English|date=November 2011}}

{{TennisEventInfo|1978|Custom Credit Australian Indoor Championships|

| date=16–22 October

| edition=6th

| category=Grand Prix circuit (Four star)

| draw=32S / 16D

| prize_money=$175,000

| location=Sydney, Australia

| venue=Hordern Pavilion

| champs={{flagicon|USA}} Jimmy Connors{{cite web|title=1978 Sydney Indoor – Singles draw|url=http://www.atptour.com/en/scores/archive/sydney/427/1978/draws?matchType=singles|publisher=Association of Tennis Professionals (ATP)}}

| champd={{flagicon|AUS}} John Newcombe / {{flagicon|AUS}} Tony Roche{{cite web|title=1978 Sydney Indoor – Doubles draw|url=http://www.atptour.com/en/scores/archive/sydney/427/1978/draws?matchType=doubles|publisher=Association of Tennis Professionals (ATP)}}

| main_name=Australian Indoor Tennis Championships

}}

The 1978 Custom Credit Australian Indoor Championships was a men's tennis tournament played on indoor hard courts at the Hordern Pavilion in Sydney, Australia and was part of the 1978 Colgate-Palmolive Grand Prix. The tournament was held from 16 October through 22 October 1978. First-seeded Jimmy Connors won the singles title.{{cite book|title=World of Tennis 1979 : a BP yearbook|year=1979|publisher=Macdonald and Jane's|location=London|isbn=978-0354090681|pages=106–107|editor=John Barrett|editor-link=John Barrett (tennis)}}