1977 Colgate-Palmolive Masters

{{Use mdy dates|date=August 2023}}

{{TennisEventInfo|1977|Colgate-Palmolive Masters|

| date=January 4–8, 1978

| edition=8th

| category=Masters

| draw=8S / 4D

| prize_money=$400,000

| surface=Carpet / Indoor

| location=New York City, US

| venue=Madison Square Garden

| champs={{flagicon|USA}} Jimmy Connors{{cite web |title=1977 Masters – Singles draw |url=https://www.atptour.com/en/scores/archive/masters/605/1977/results |publisher=Association of Tennis Professionals (ATP)}}

| champd={{flagicon|RSA|1928}} Bob Hewitt / {{flagicon|RSA|1928}} Frew McMillan{{cite web |title=1977 Masters – Doubles draw |url=https://www.atptour.com/en/scores/archive/masters/605/1977/results?matchType=doubles |publisher=Association of Tennis Professionals (ATP)}}

| before_name=Commercial Union Assurance Masters

| main_name=ATP Finals

}}

The 1977 Masters (also known as the 1977 Colgate-Palmolive Masters for sponsorship reasons){{cite book | last1 = Collins | first1 = Bud | authorlink1 = Bud Collins | title = The Bud Collins History of Tennis: An Authoritative Encyclopedia and Record Book | chapter = Year-End Championships | publisher = New Chapter Press | date = October 2010 | location = New York | pages = 746 | isbn = 978-0-942257-70-0}} was a men's tennis tournament held in Madison Square Garden, New York City, New York between January 4, and January 8, 1978. It was the year-end championship of the 1977 Colgate-Palmolive Grand Prix tour.{{cite news|title=Nineteen-Seventy What?|url=https://news.google.com/newspapers?id=OeULAAAAIBAJ&sjid=j1gDAAAAIBAJ&pg=6744%2C733694|work=The Evening Independent|agency=AP|date=January 5, 1978|page=5-C}} Jimmy Connors won the singles title.