Rupani (Nepali: रुपनी) is a small rural municipality in Saptari District in the Sagarmatha Zone of south-eastern Nepal. At the time of the 2019 Nepal census it had a population of 29,989 people living in about 8500 individual households.

Major religious celebrations include the major Hindu festivals Vijaya Dashami, Dipawali, Chhath, Holi, Ram Navmi, Janai Purnima or Rakshabandhan, Saraswati Puja or Vasant Panchami, Jeetia, Chauth Chandra, Vishwakarma Puja, Govardhan Puja, Bhai Tika, Chaite Dashain and so on. The Dashain, Deepawali, Chhath and Holi are heavily celebrated with full devotee and proper rules. The locals people take pride in the way these festivals are celebrated with joy and happiness.

and Muslim festival "Eid al-Fitr" and "Eid al-Adha"

Though its name is given after Rupani Devi. It is popular for Shiva Sani Dham in the northern part of Chure hills which is about 6.5 km (4.0 mi) from the East-West Highway and Dinaram Bhadri Temple in Kataiya. People use to visit there in huge numbers on Saturday to worship Shani Dev. Dinaram Bhadri is the deity god of Musahar people. There are many small temples including dihabar sthan, rajaji, hanuman temple, etc.