The Sutherland Shire Council website suggests two possible origins for the name, "Kirrawee". The first possibility is that it derives from an Aboriginal word meaning 'lengthy'; the second is that it derives from a Dharawal word, "gi(a)rrawee(i)" (alternative spelling "garrawi"), which means 'place of white cockatoos' or 'sulphur-crested cockatoos'. The current signage erected by the Council uses 'place of white cockatoos' as the accepted meaning for the suburb name. The name was adopted in 1939 with the opening of the Sutherland-Cronulla railway line. A postal receiving office in the locality was known as 'Bladesville'. It operated from the home of Mrs Louisa Blade, was opened in 1909 and closed in 1915 when a letter delivery service commenced from the post office at Sutherland.