Thai district official Pot Ruworanan said no casualties were reported from the fire Thursday that destroyed about a fifth of the dwellings at the Umpiem Mai camp in Tak province.
He said the fire spread quickly because the shacks are highly flammable in dry weather but was extinguished after 1 1/2 hours. The cause of the blaze was not known.
The Thailand Burma Border Consortium website said an undetermined number of people suffered burns. The aid coordinating group also said three mosques and two nursery schools were destroyed.
The camp houses about 17,000 of the 130,000 Burma refugees living in camps along the Thai border.