O'Connor is a predominantly industrial suburb of Perth, Western Australia, located within the City of Fremantle. It was established in 1955 and is named after the Irish engineer, C.Y. O'Connor, who is buried in Fremantle Cemetery.
O'Connor has a roller skating rink plus a number of retail store; A major hardware store, 2 major electronics retailers, a tyre store, several automotive parts and accessory stores, a popular bicycle store, a furniture store and numerous other retail stores.
There are quite a number of light industrial activities taking place in the suburb, the most prominent of which is the Anchor Cordial Operations on Carrington Street.
There are 2 precincts of residential dwellings which contain a small but growing number of dwellings.
O'Connor is also an electoral division in Western Australia.