The 1970 NCAA Men's University Division Ice Hockey Tournament was the 23rd such tournament in NCAA history. It was held between March 19 and 21, 1970, and concluded with undefeated in the season Cornell beating Clarkson 6 to 4. All games were played at the Olympic Arena in Lake Placid, New York. 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.