Great Britain has been winning Olympic medals in rowing for years, although the man who has won gold at the last five Games, Sir Steven Redgrave, has retired.
There are loads of different races, with the smallest crewed by just one person and the biggest by teams of eight.
The events are split into two types; sculling, where rowers each have two oars, and the sweep events where they have one each.
Who are the British hopes for Athens?
There are lots. The biggest hope is the men's coxless four, with three-time Olympic gold medallist Matthew Pinsent hoping to add another win to his collection.
In the women's event Katherine Grainger and Cath Bishop in the women's coxless pair are the current world champions, and should challenge for a medal.
Other crews should also challenge for medals, with the men's eight also winning in Sydney four years ago.
Who are the big names?
Georgina and Caroline Evers-Swindell have not lost in the women's double sculls for two years, so understandably are one of New Zealand's biggest hopes for gold at the Games.