Each country was allowed to enter a team of 18 players and they all were eligible for participation. A total number of 191 players were entered, however only the 144 participants and six more players are known up to now. The official report for this Games also shows 144 competitors, but in the "Index of competitors" there are 147 players listed. The Austrian Hermann Knoll, the Belgian Jean-Jacques Moucq and the Polish Tadeusz Adamski did, according to the report itself, not compete in the main tournament. The Austrian player is not even shown as competitor by the Austrian Olympic Committee database.
A total of 144(*) field hockey players from 12 nations competed at the Helsinki Games:
There was also a consolation tournament played by the teams which were eliminated before the semi-finals. It is unknown, if this part of the tournament was official and part of the Olympic Games, because the official report did not shown these matches in any kind. However the teams are listed in order of the results of this consolation round.