Princess Princep Rajya Lakshmi Devi Shah of Nepal (March 16, 1930 - May 22, 1982) was, by marriage, a princess of Nepal. She was the wife of Prince Himalaya of Nepal, the second son of King Tribhuvan of Nepal. She was a sister-in-law of King Mahendra and Prince Basundhara.

In 1963, she helped establish the Nepal Red Cross Society, chairing the organisation for 20 years. She was awarded the Nansen Refugee Award in 1969.

Princess Princep Shah was born at the Bahadur Bhawan, Kathmandu, on March 16, 1930. She was the eldest daughter of General Nara Shamsher Jang Bahadur Rana, KCVO, sometime Inspector-General of the Royal Nepal Police, by his first wife, Uma Rajya Laxmi, of Doti.

She studied Nepali literature at Tribhuvan University.^[1]

Princess Princep Shah was the older sister of Princess Helen Shah, first wife of his brother-in-law, Prince Basundhara of Nepal.

Princep married Prince Himalaya of Nepal on March 5, 1945, in Kathmandu.

Along with her husband, Princess Princep attended the coronation of Queen Elizabeth II in 1953, at Westminster Abbey in London.

In 1965, the princess and her husband founded the Soaltee Crowne Plaza hotel, which was later renamed as the Soaltee Holiday Inn Crowne Plaza Kathmandu in 1994.^[2]

Princess Princep Shah was the founder of Nepal Red Cross Society in 1963.^[1][3] She chaired organisation for 20 years,^[4] including when it joined the International Committee of the Red Cross on October 1, 1964.^[5] She was one of several Nepali representatives to the United Nations,^[1] and a member of the Nepal Leprosy Relief Organization.^[6]

She was awarded the 1969 Nansen Refugee Award for her leadership of the Nepal Red Cross' support for Tibetan refugees in Nepal.^[7]

Princess Princep died at the Samitivej Hospital, Bangkok, on 22 May 1982.^[1]

• Princess Helen Shah of Nepal