There are two referees in an ice hockey game and two linesmen.
there are four two linesmen and two referees
there are two referees and two linesmen for a total of 4 on the ice.
Four officials are actually on the ice. There are two referees (the guys with orange armbands) and two linesmen.
At the 2010 Winter Games, there were 4 officials for a men's game (2 referees and 2 linesman) and 3 officials for a women's game (1 referee and 2 linesman).
For the most part, it keeps the player, crowd, referees and puck on the ice.
4. 2 referees and 2 linesmen
In an NHL game there are four officials on the ice. There are two linesmen who are mainly responsible for calling icing, offsides and too many men penalties. In addition there are also two referees who are responsible for calling penalties.
There are four on-ice officials, two referees and two linesmen. Off-ice officials include the score keeper, the time keeper and two goal judges.
Hockey not Ice-Hockey