| Year: | 1966 |
| Gender: | men's |
| Division: | University Division |
| Teams: | 4 |
| Frozenfourarena: | Williams Arena |
| Frozenfourcity: | Minneapolis, Minnesota |
| Champions: | Michigan State Spartans |
| Titlecount: | 1st |
| Champgamecount: | 2nd |
| Champffcount: | 2nd |
| Runnerup: | Clarkson Golden Knights |
| Gamecount: | 2nd |
| Runnerffcount: | 5th |
| Semifinal1: | Denver Pioneers |
| Frozenfourcount: | 6th |
| Semifinal2: | Boston University Terriers |
| Frozenfourcount2: | 5th |
| Coach: | Amo Bessone |
| Coachcount: | 1st |
| Mop: | Gaye Cooley |
| Mopteam: | Michigan State |
| Attendance: | 9,063 |
The 1966 NCAA Men's University Division Ice Hockey Tournament was the culmination of the 1965–66 NCAA University Division men's ice hockey season, the 19th such tournament in NCAA history. It was held between March 17 and 19, 1966, and concluded with Michigan State defeating Clarkson 6–1. All games were played at the Williams Arena in Minneapolis, Minnesota.
Four teams qualified for the tournament, two each from the eastern and western regions. The ECAC tournament champion and the two WCHA tournament co-champions received automatic bids into the tournament. An at-large bid was offered to a second eastern team based upon both their ECAC tournament finish as well as their regular season record.
| East | West | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Seed | School | Conference | Record | Berth type | Appearance | Last bid | Seed | School | Conference | Record | Berth type | Appearance | Last bid |
| 1 | Boston University | ECAC Hockey | 27–6–0 | At-Large | 5th | 1960 | 1 | Denver | WCHA | 17–10–3 | Tournament co-champion | 6th | 1964 |
| 2 | Clarkson | ECAC Hockey | 23–2–0 | Tournament champion | 5th | 1963 | 2 | Michigan State | WCHA | 14–13–0 | Tournament co-champion | 2nd | 1959 |
Despite winning the tournament the ECAC champion was not seeded as the top eastern team; this occurred because the at-large team played and won more games, both in conference and overall. The WCHA co-champion with the better regular season record was given the top western seed. The second eastern seed was slotted to play the top western seed and vice versa. All games were played at the Williams Arena. All matches were Single-game eliminations with the semifinal winners advancing to the national championship game and the losers playing in a consolation game.
[2] Note: * denotes overtime period(s)
| Scoring summary | ||||||||
|---|---|---|---|---|---|---|---|---|
| Period | Team | Goal | Assist(s) | Time | Score | |||
| 1st | align=center style="color:white; background:#007A53" | MSU | Mike Coppo | Heaphy | align=center | 14:31 | align=center | 1–0 MSU |
| align=center style=";" | CLK | Andrew Hamilton | McLennan and Hurley | align=center | 17:54 | align=center | 1–1 | |
| 2nd | align=center style="color:white; background:#007A53" | MSU | Bob Brawley – GW | McAndrew and Heaphy | align=center | 34:31 | align=center | 2–1 MSU |
| 3rd | align=center style="color:white; background:#007A53" | MSU | Mike Coppo | Faunt | align=center | 40:17 | align=center | 3–1 MSU |
| align=center style="color:white; background:#007A53" | MSU | Bob Fallat | McAndrew | align=center | 43:38 | align=center | 4–1 MSU | |
| align=center style="color:white; background:#007A53" | MSU | Doug Volmar | Faunt | align=center | 52:12 | align=center | 5–1 MSU | |
| align=center style="color:white; background:#007A53" | MSU | Bill Faunt | unassisted | align=center | 59:32 | align=center | 6–1 MSU | |
| Shots by period | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Team | 1 | 2 | 3 | T | ||||||
| align=center style=";" | Clarkson | align=center | align=center | align=center | align=center | 24 | ||||
| align=center style="color:white; background:#007A53" | Michigan State | align=center | align=center | align=center | 20 | align=center | 50 | |||
| Goaltenders | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Team | Name | Saves | Goals against | Time on ice | |||||
| align=center style=";" | CLK | align=center | 44 | align=center | 6 | align=center | |||
| align=center style="color:white; background:#007A53" | MSU | align=center | 23 | align=center | 1 | align=center | |||
* Most Outstanding Player(s)[4]