Fire crews were called to a caravan on fire at 12:45am on Friday morning.
Two crews from Barnsley and Cudworth stations attended the incident on Low Row in Woolley Colliery Village, Barnsley
The touring caravan which was in a back garden was well alight when the firefighters arrived.
The crews used hose reels to tackle the fire.
Firefighters left the scene at 01:45am.
The fire is believed to have been started deliberately.