Alex Popow Karaha (born 9 November 1975 in Lecheria) is a Venezuelan racing driver who competes in the American Le Mans Series and Rolex Sports Car Series for CORE autosport and Starworks Motorsport.

He was champion of the LMPC class in the American Le Mans Series in 2012 and obtained a class victory at the 12 Hours of Sebring in 2012, and an overall win the inaugural Brickyard Grand Prix at Indianapolis Motor Speedway in 2012. Also, he finished second overall in the 2012 24 Hours of Daytona.

Popow's name, which is pronounced "pop-off", is the result of his Eastern European ancestry. During a broadcast on Speed Channel, it was revealed that his family name was originally Popov, but was changed to Popow upon his ancestors' immigration.

Popow began his racing career in his native Venezuela in 1996, winning the Eastern Division Championship for 2000cc cars. He repeated as champion one year later before moving up to the Fiat Palio Cup and Mustang Cup, where he reached success in both championships. Popow was the Expert Class champion in the Palio Cup in both 1998 and 1999, while also earning top honors in the Mustang Cup in 2000 and 2002.

Having won the Formula 2000 Venezuela Championship in 2005, Popow went on to form the first all-Venezuelan team to participate in the Panam-GP series, which took place in six countries, including Venezuela.

Considered the most prestigious professional auto racing event in Colombia, Popow has also enjoyed success in the Bogota 6 Hours. He earned a second-place result in his debut in 1997, while also collecting runner-up finishes in 2004 and 2005. Popow was crowned champion of the race in 2011.

Between 2007 and 2009, Popow competed in the AWA 4x4 Rally Championship, earning a third-place finish in the LUV D-MAX Trophy.

Popow made his Grand-Am debut in 2011, racing in the Rolex Sports Car Series for Starworks Motorsport team. He finished a season-high third at Watkins Glen with Ryan Dalziel and finished 20th in the Daytona Prototype points standings.