The following age categories for indoor rowing are recognised by FISA:
- Under 23
The age of an athlete for indoor rowing events shall be the age at the date of the competition. Where the competition includes several days the age shall be as at the scheduled date of the final for the event concerned. A Junior rower shall not have attained the age of 19 and an Under 23 rower shall not have attained the age of 23 by the relevant date. Refer to the World Indoor Rowing Rules and Final Schedule for the World Indoor Rowing Championships.