A huge plume of thick black smoke can be seen rising hundreds of feet into the air.
A spokesperson for South Yorkshire Fire and Rescue said a number of vehicles are on fire at a scrap yard in the Marsh Gate area of the town.
Rivelin Valley Road Sheffield: Body found after police search of Rivelin Valley
Hosepipe ban: Reservoir near Sheffield less than 15 per cent full as photos show how water levels have plunged
The Long Blondes: Leadmill cancel gig after allegations surface against band creator Dorian Cox
Yorkshire Water announces hosepipe ban as Government prepares to declare drought in UK
Sheffield businessman Rong Ren ordered to pay £1.1m by courts over phones scam
She said they received the call at 10.05am and crews from Doncaster Central, Edlington and Adwick stations were attending the incident.
There were no details about anybody being involved or the cause of the blaze at this stage.