Damar Hamlin Attendance Fuels Body Double Conspiracy Theories, Sources Say BS

Damar Hamlin's presence at the Bills' playoff game has fueled wild conspiracies on the Internet among the tin foil hat-wearing crowd ... with some suggesting a body double was used in the 24-year-old safety's place.

But, multiple sources tell TMZ Sports that's simply not true ... sorry, conspiracy theorists.

Hamlin attended the Bills-Bengals game Sunday afternoon at Highmark Stadium ... his first time back at an NFL game since he went into cardiac arrest on the field in Cincinnati on January 2.

Damar, wearing a mask, hoodie, and sunglasses, was shown on television and the stadium scoreboard ... but between the accessories and bad weather in Buffalo, it was difficult to see Hamlin.

FYI, it was 30 degrees in western New York on Sunday.

Given Hamlin didn't speak with the media, and his face wasn't seen clearly, some people went to Twitter and online forums, suggesting a stand-in was used in DH's place.

The speculation has even gotten to the point where people were dissecting other pictures of Damar ... including the one teammate Matt Milano posted last weekend, which was believed to be Hamlin's first return to the Bills facility.

In the interest of debunking Internet conspiracy theories, we made some calls ... and multiple people close to Damar say it's absolute nonsense.

Bottom line -- Damar Hamlin was at the Bills game.