Àlex Simon i Casanovas (born 1960 in Gràcia neighbourhood of Barcelona) is a Catalonian mountain guide, climbing teacher, outdoor instructor and logistic.

He has climbed in the Pyrenees, Alps and the Dolomites, as well as in the United States, Brazil, Guatemala, Indonesia, Australia and Antarctica, and crossed by bicycle sections of the Simpson Desert (Australia) and Atacama Desert (Chile).

Since 2012, Simon i Casanovas has organized the Rovaniemi 150 Arctic Winter Race.

Rovaniemi150 (150 km [93 mi]) is the first, and still the only one (2017) polar winter ultramarathon in Europe which combines three categories: fatbike, ski and run.

Simon i Casanovas was the mountain guides team leader at the Spanish Antarctic base of Juan Carlos I in 2001–06, carrying out extensive field work on Hurd Peninsula, Huron Glacier area, Byers Peninsula, and Ioannes Paulus II Peninsula on Livingston Island in the South Shetland Islands.