1984 Volvo Masters

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

{{main|ATP Finals}}

{{TennisEventInfo|1984|Volvo Masters|

| date=January 8–13, 1985

| edition=15th

| category=Masters

| draw=12S / 6D

| prize_money=$400,000

| location=New York City, US

| venue=Madison Square Garden

| surface=Carpet / indoor

| champs={{flagicon|USA}} John McEnroe{{cite web |title=1984 Masters – Singles draw |url=https://www.atptour.com/en/scores/archive/masters/605/1984/results?matchType=singles |publisher=Association of Tennis Professionals (ATP)}}

| champd={{flagicon|USA}} Peter Fleming / {{flagicon|USA}} John McEnroe{{cite web |title=1984 Masters – Doubles draw |url=https://www.atptour.com/en/scores/archive/masters/605/1984/results?matchType=doubles |publisher=Association of Tennis Professionals (ATP)}}

| after_name=Nabisco Masters

| main_name=ATP Finals

}}

The 1984 Masters (also known as the 1984 Volvo 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, United States between 8 January and 13 January 1985. It was the year-end championship of the 1984 Volvo Grand Prix tour. First-seeded John McEnroe won the singles title.