28. Spanish Paralympians
It’s scandalous that they thought that they could get away with this. Spain competed in basketball at the 2000 Paralympics. They claimed that their team members had intellectual disabilities. But a whistleblower revealed the truth.

None of their players had any disabilities at all. The Spanish federation wanted their team to receive more sponsorships so they lied to the world. It became a massive scandal because this was a disgraceful thing to do (via InsideTheGames).