The 1965 Belgian Grand Prix was a Formula One motor race held at Spa-Francorchamps on 13 June 1965. It was race 3 of 10 in both the 1965 World Championship of Drivers and the 1965 International Cup for Formula One Manufacturers. The race was won by British driver Jim Clark who led every lap of the race driving a Lotus 33. It was one of the Scot's most dominant wins. In the rain, he pulled away and with a third of the race to go, the Lotus driver was leading his fellow Scotsman Jackie Stewart by 1 minute and 20 seconds. However, for the last six laps Clark eased off dramatically and when the chequered flag was waved his lead was down to just under 45 seconds.
Classification
Qualifying
{| class="wikitable sortable" style="font-size: 95%"
|-
! Pos
! No
! Driver
! Constructor
! Time
! Gap
|-
!1
| 7
| Graham Hill
| BRM
| 3:45.4
| align="center" |—
|-
!2
| 17
| Jim Clark
| Lotus-Climax
| 3:47.5
| +2.1
|-
!3
| 8
| Jackie Stewart
| BRM
| 3:48.8
| +3.4
|-
!4
| 10
| Richie Ginther
| Honda
| 3:49.0
| +3.6
|-
!5
| 15
| Dan Gurney
| Brabham-Climax
| 3:49.2
| +3.8
|-
!6
| 1
| John Surtees
| Ferrari
| 3:49.7
| +4.3
|-
!7
| 20
| Jo Bonnier
| Brabham-Climax
| 3:50.7
| +5.3
|-
!8
| 21
| Jo Siffert
| Brabham-BRM
| 3:51.3
| +5.9
|-
!9
| 4
| Bruce McLaren
| Cooper-Climax
| 3:51.5
| +6.1
|-
!10
| 14
| Jack Brabham
| Brabham-Climax
| 3:52.3
| +6.9
|-
!11
| 11
| Ronnie Bucknum
| Honda
| 3:52.6
| +7.2
|-
!12
| 18
| Mike Spence
| Lotus-Climax
| 3:53.2
| +7.8
|-
!13
| 23
| Richard Attwood
| Lotus-BRM
| 3:53.3
| +7.9
|-
!14
| 5
| Jochen Rindt
| Cooper-Climax
| 3:54.0
| +8.6
|-
!15
| 2
| Lorenzo Bandini
| Ferrari
| 3:57.4
| +12.0
|-
!16
| 22
| Innes Ireland
| Lotus-BRM
| 3:59.0
| +13.6
|-
!17
| 27
| Lucien Bianchi
| BRM
| 3:59.4
| +14.0
|-
!18
| 26
| Frank Gardner
| Brabham-BRM
| 3:59.4
| +14.0
|-
!19
| 24
| Bob Anderson
| Brabham-Climax
| 3:59.8
| +14.4
|-
!20
| 29
| Masten Gregory
| BRM
| 4:02.8
| +17.4
|-
! colspan="6" | Source:
|}
Race
{| class="wikitable" style="font-size:95%;"
! Pos
! No
! Driver
! Constructor
! Laps
! Time/Retired
! Grid
! Points
|-
! 1
| 17
| Jim Clark
| Lotus-Climax
| 32
| 2:23:34.8
| 2
| 9
|-
! 2
| 8
| Jackie Stewart
| BRM
| 32
| +44.8 secs
| 3
| 6
|-
! 3
| 4
| Bruce McLaren
| Cooper-Climax
| 31
| +1 Lap
| 9
| 4
|-
! 4
| 14
| Jack Brabham
| Brabham-Climax
| 31
| +1 Lap
| 10
| 3
|-
! 5
| 7
| Graham Hill
| BRM
| 31
| +1 Lap
| 1
| 2
|-
! 6
| 10
| Richie Ginther
| Honda
| 31
| +1 Lap
| 4
| 1
|-
! 7
| 18
| Mike Spence
| Lotus-Climax
| 31
| +1 Lap
| 12
|
|-
! 8
| 21
| Jo Siffert
| Brabham-BRM
| 31
| +1 Lap
| 8
|
|-
! 9
| 2
| Lorenzo Bandini
| Ferrari
| 30
| +2 Laps
| 15
|
|-
! 10
| 15
| Dan Gurney
| Brabham-Climax
| 30
| +2 Laps
| 5
|
|-
! 11
| 5
| Jochen Rindt
| Cooper-Climax
| 29
| +3 Laps
| 14
|
|-
! 12
| 27
| Lucien Bianchi
| BRM
| 29
| +3 Laps
| 17
|
|-
! 13
| 22
| Innes Ireland
| Lotus-BRM
| 27
| +5 Laps
| 16
|
|-
! 14
| 23
| Richard Attwood
| Lotus-BRM
| 26
| Accident
| 13
|
|-
!
| 29
| Masten Gregory
| BRM
| 12
| Fuel pump
| 20
|
|-
!
| 20
| Jo Bonnier
| Brabham-Climax
| 9
| Ignition
| 7
|
|-
!
| 11
| Ronnie Bucknum
| Honda
| 9
| Gearbox
| 11
|
|-
!
| 1
| John Surtees
| Ferrari
| 5
| Engine
| 6
|
|-
!
| 26
| Frank Gardner
| Brabham-BRM
| 3
| Ignition
| 18
|
|-
!
| 24
| Bob Anderson
| Brabham-Climax
| 0
| Engine
| 19
|
|-
!
| 28
| Willy Mairesse
| BRM
|
| Too slow
|
|
|-
!colspan="8"|
|}
Notes
- Jim Clark now held the sole record of four Belgian Grand Prix wins, breaking the old record of three wins set by Juan Manuel Fangio at the 1955 Belgian Grand Prix.
- This was the first Formula One World Championship point for Honda as a constructor and as an engine supplier, also the first for a Japanese and Asian constructor and engine supplier.
- A Coventry Climax-powered car now had won the Belgian Grand Prix a record five times, breaking the old record of four wins set by Ferrari at the 1961 Belgian Grand Prix.
Championship standings after the race
;Drivers' Championship standings
{| class="wikitable" style="font-size: 95%;"
|-
!
!Pos
!Driver
!Points
|-
|align="left"| 10px 1
|align="center"| 1
| Jim Clark
| align="left"| 18
|-
|align="left"| 10px 1
|align="center"| 2
| Graham Hill
| align="left"| 15
|-
|align="left"| 10px 2
|align="center"| 3
| Jackie Stewart
| align="left"| 11
|-
|align="left"| 10px 1
|align="center"| 4
| John Surtees
| align="left"| 9
|-
|align="left"| 10px 1
|align="center"| 5
| Bruce McLaren
| align="left"| 8
|-
!colspan=4|Source:
|}
;Constructors' Championship standings
{|class="wikitable" style="font-size: 95%;"
|-
!
! Pos
! Constructor
! Points
|-
|align="left"| 10px
|align="center"| 1
| BRM
| align="left"| 19
|-
|align="left"| 10px 1
|align="center"| 2
| Lotus-Climax
| align="left"| 18
|-
|align="left"| 10px 1
|align="center"| 3
| Ferrari
| align="left"| 12
|-
|align="left"| 10px
|align="center"| 4
| Cooper-Climax
| align="left"| 8
|-
|align="left"| 10px 1
|align="center"| 5
| Brabham-Climax
| align="left"| 3
|-
!colspan=4|Source: