Alaaeldin Mohamed El-Sayed Abouelkassem (Arabic: ; born 25 November 1990) is an Egyptian fencer who won a silver medal in the men's foil event at the 2012 Summer Olympics. He took up fencing at the age of eight and, in 2008, began fencing internationally, winning medals at the African and World Junior Championships, as well as the Junior World Cup, before progressing to the senior level in 2011 and capturing bronze at the Fleuret de St-Petersbourg. Later that year he earned gold medals at the 2011 Pan Arab Games in the individual and team foil events before progressing to the 2012 Summer Games, where he won Africa's first-ever Olympic fencing medal.