Saint Aloysius' College (Sinhala: සාන්ත ඇලෝෂියස් විද්‍යාලය) is a boys' high school located in Galle, the capital city of Southern Province in Sri Lanka.

The school was established in 1895 by recently arrived Belgian Jesuit missionaries, led by Joseph Van Reeth, first bishop of Galle.

St. Aloysius' College is situated on Mount Calvary, neighbouring St. Mary's Cathedral on one side and Sacred Heart Convent on the other.

Rooster – Symbol of Galle Students represent five houses that are named after Jesuit Fathers who were pioneers in developing the school in its early days.

Taking centre stage of the annual sporting calendar are the St. Aloysius' - Richmond Rugby Encounter.

There are a number of branches of the school's Old Boys’ Association located all around the world, including Australia, New Zealand, Qatar and the United Kingdom.