Olhaniyan is a village in Majhgaon tehsil in district of Pashchimi Singhbhum, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Olhaniyan was 316 which includes 166 males and 150 females. Olhaniyan covers 224 ha area. Pincode of Olhaniyan is 833214.