Alfredo Arévalo Reyes (born February 20, 1976) is a Guatemalan marathon runner.
In 2004, he achieved both his personal best and a national record-breaking time of 2:12:53 at the National Capital Marathon in Ottawa, Ontario, Canada.
Arevalo made his official debut for the 2004 Summer Olympics in Athens, where he finished seventy-seventh in the men's marathon, outside his personal best of 2:34:02.
At the 2008 Summer Olympics in Beijing, Arevalo competed again for the second time in men's marathon, along with his compatriot José Amado García.
He finished the race in sixty-third place by twelve seconds behind Montenegro's Goran Stojiljkovic, with a time of 2:28:26.