The 1966 NHL amateur draft was the fourth draft for the National Hockey League. It was held at the Mount Royal Hotel in Montreal on the off-day between games one and two of the 1966 Stanley Cup Final.
This draft is notable for being the first in which the majority of the players selected (19 of 24 picks) came from top-tier junior teams which would, in the succeeding years, reorganize into Major Junior Hockey in Canada. Perhaps anticipating these changes, and looking to make the draft more competitive in advance of the 1967 NHL expansion, league president Clarence Campbell announced a plan eight months later to restructure rookie contracts and phase out direct sponsorship of junior hockey teams by NHL clubs.
The last active player in the NHL from this draft class was Brad Park, who played his last NHL game in the 1984–85 season.
Selections by round
Listed below are the selections in the 1966 NHL amateur draft.
Round one
{| class="wikitable" style="width: 100%"
|-
! style="background:#ddf; width:2.75%;"| #
! style="background:#ddf; width:22.0%;"| Player
! style="background:#ddf; width:20.0%;"| Nationality
! style="background:#ddf; width:34.0%;"| NHL team
! style="background:#ddf; width:100.0%;"| College/junior/club team
|-
! 1
| Barry Gibbs (D) || || Boston Bruins || Estevan Bruins (SJHL)
|-
! 2
| bgcolor="#CCFFCC"| Brad Park (D) || || New York Rangers || Toronto Marlboros (OHA)
|-
! 3
| Terry Caffery (C) || || Chicago Black Hawks || Toronto Marlboros (OHA)
|-
! 4
| John Wright (C) || || Toronto Maple Leafs || West Clair Gaels (OHA)
|-
! 5
| Phil Myre (G) || || Montreal Canadiens || Shawinigan Bruins (QJHL)
|-
! 6
| Steve Atkinson (RW) || || Detroit Red Wings || Niagara Falls Flyers (OHA)
|-
|align=center colspan="6" bgcolor="#efefef"|
|}
Round two
{| class="wikitable" style="width: 100%"
|-
! style="background:#ddf; width:2.75%;"| #
! style="background:#ddf; width:22.0%;"| Player
! style="background:#ddf; width:20.0%;"| Nationality
! style="background:#ddf; width:34.0%;"| NHL team
! style="background:#ddf; width:100.0%;"| College/junior/club team
|-
! 7
| Rick Smith (D) || || Boston Bruins || Hamilton Red Wings (OHA)
|-
! 8
| bgcolor="#FFCC00"| Joey Johnston (LW) || || New York Rangers || Peterborough Petes (OHA)
|-
! 9
| Ron Dussiaume (LW) || || Chicago Black Hawks || Oshawa Generals (OHA)
|-
! 10
| Cam Crosby (LW) || || Toronto Maple Leafs || Toronto Marlboros (OHA)
|-
! 11
| Maurice St. Jacques (C) || || Montreal Canadiens || London Nationals (OHA)
|-
! 12
| Jim Whittaker (D) || || Detroit Red Wings || Oshawa Generals (OHA)
|-
|align=center colspan="6" bgcolor="#efefef"|