Tranby, Glebe, Heritage-listed house in Glebe, Australia

Tranby is a heritage-listed former residence at 13 Mansfield Street in Glebe, Sydney, also known as Toxteth Cottage. Designed by A. L. & G. McCredie, it was built from 1858, with additions made in 1910 to house William Allen's large family. The house and grounds have served since 1958 as the campus of Tranby National Indigenous Adult Education and Training.

Tranby, first known as Toxteth Cottage, was listed in the Sands Directory in 1858 and is thought to have been completed that year, within George Allen's Toxteth Park Estate. Allen's daughter Mary and her husband George Allen Mansfield lived there until 1861; it took the name Tranby in the 1870s. Additions were made in 1910 for William Boyce Allen's large family, and from 1957 it served as a training centre for Aboriginal co-operative practices under Rev Alf Clint.

The name Tranby came into use in the 1870s, when George Allen's daughter Elizabeth and her husband William Binnington Boyce lived in the cottage, then still called Toxteth Cottage. Since 1957 the house has served Aboriginal adult education, run from 1971 under the registered name Tranby Co-operative for Aborigines Ltd.

Tranby stands at 13 Mansfield Street in Glebe, a short walk from Glebe Point Road and its bus routes; the site is a working adult education campus, so visits depend on the co-operative's arrangements rather than fixed public hours. The house and grounds were added to the New South Wales State Heritage Register on 2 April 1999, so any access to the 1858 cottage and its 1910 additions is by prior arrangement with Tranby Aboriginal Co-operative Ltd.

Tranby was first listed in the Sands Directory in 1858 as Toxteth Cottage, standing in the grounds of George Allen's Toxteth Park Estate; Allen was Mayor of Sydney in 1844–45 and president of the Bank of New South Wales from 1860 to 1866. The name Tranby came in the 1870s with Allen's daughter Elizabeth and her husband William Binnington Boyce.