|Eastern Finals:||Celtics defeated Royals, 4–1|
|Western Finals:||Warriors defeated Hawks, 4–3|
The 1964 NBA World Championship Series was the championship round of the 1964 NBA playoffs, which concluded the National Basketball Association 1963–64 season.
The best-of-seven series was played between the Western Conference champion San Francisco Warriors and the Eastern Conference champion Boston Celtics. This was the Celtics' eighth straight trip to the championship series, as they won the series over the Warriors, 4–1.
1964 NBA Playoffs
|San Francisco Warriors (Western Division Champion)||Boston Celtics (Eastern Division Champion)|
1st Western, 3rd Overall
|Regular season||59–21 (.738)
1st Eastern, 1st Overall
|Earned first-round bye||Division Semifinals||Earned first-round bye|
|Defeated the (2) St. Louis Hawks, 4–3||Division Finals||Defeated the (2) Cincinnati Royals, 4–1|