Yarelys Barrios Castañeda (also Yarelis Barrios Castañeda; born July 12, 1983, in Pinar del Río) is a discus thrower from Cuba.

She won the 2012 Cuban National Championships with a personal best throw of 68.03 metres.

[1] Barrios finished the Olympic discus competition in 2008 in the second place, but was disqualified by the IOC on September 1, 2016, because of doping due to a sample reanalysis which resulted in a positive test for the prohibited substance Acetazolamide.

[2] Barrios sold her Olympic silver medal on auction site, eBay, for unknown reasons, and it was bought for $11,000 (£9,000).

[3] This biographical article relating to Cuban athletics is a stub.