Egidius Aerts (1822–1853) was a Belgian flautist and composer.
He was born in Boom, United Kingdom of the Netherlands.
He studied under Jean François Joseph Lahon (1798-1847) in the Brussels Conservatory.
From 1837 to 1840 he travelled professionally through France and Italy, and on his return to Brussels studied composition under François-Joseph Fétis.
He composed symphonies and overtures, as well as concertos and other music for the flute.