How many soccer players are on a field?

Maximum is 22

11 per team in the pros, but younger it can be 6, 8, or 11 per team

Eleven. 10 field players and one goalie.

22 you have 2 teams, both teams have 11 players on the field (and some on the bench, but that wasn't your question) you've got 10 players and 1 goalkeeper.. or 20 players and 2 goalkeepers if you...

11 from each side, including a goalie