Kirsty Wigglesworth/AP
While budget cuts are expected to make for a less lavish event than in summer Olympics past, Rio's opening ceremony will nevertheless feature some 11,000 athletes representing 206 countries. Team USA, unsurprisingly, will have the biggest delegation in Rio with 554 athletes.
But on the other end of things, several countries have just one or two athletes representing them at the Olympics. Many of these small nations have never won a medal, but are Olympians all the same.
Here are the 10 smallest athletic delegations in Rio: