Kelvinhaugh is a rural locality in the Toowoomba Region, Queensland, Australia.

[1] The Oakey–Cooyar Road enters the locality from the south-west (Oakey) and forms the western boundary, exiting to the north-west (Sabine / Greenwood).

[3] The land use is a mixture of grazing on native vegetation and crop growing.

[7][8] The Cooyar railway line opened from Oakey to Kulpi (then known as Rosalie) on 29 April 1912.

[7][11] The name Wilthorn was created from name of the local Member of the Queensland Legislative Assembly, William Thorn.