Gloucester (/ ˈ ɡ l ɒ s t ər / GLOS-tər) is an area of Ottawa, Ontario, Canada surrounding the city's eastern side. Gloucester was an independent township (and later, city) prior to its amalgamation with Ottawa in 2001.

Gloucester is a traditional, semi-hard cheese which has been made in Gloucestershire, England, since the 16th century.There are two varieties of the cheese, Single and Double; both are traditionally made from milk from Gloucester cattle.Both types have a natural rind and a hard texture, but Single Gloucester is more crumbly, lighter in texture and lower in fat.