Alex Fiva (born 29 January 1986) is a Swiss freestyle skier who specializes in the ski cross discipline.

In 2006 he was the Swiss Junior Bronze medalist in the slalom discipline; however, he quit alpine skiing in 2007.

Having switched to freestyle ski cross, he made his World Cup debut in March 2008 in Meiringen, with a 29th place.

He was chosen to represent Switzerland at the FIS Freestyle World Ski Championships 2011 in Deer Valley Resort.

He won his first World Cup in the night event in St. Johann in Tirol, and his second win came in the next week in Les Contamines.