Nimisha Jayant Madhvani is a Ugandan diplomat, formerly Uganda's Ambassador to the Nordic countries she was accredited to Denmark, Finland, Iceland, Norway and Sweden.

Prior to that, she served as Uganda's Ambassador to United Arab Emirates, and the International Renewable Energy Agency (IRENA).

Before that, she was Uganda's ambassador to France, Spain, Portugal and UNESCO, based in Paris.

She was born in Uganda in 1959 to Meena Madhvani and Jayant Madhvani, both Ugandan citizens of Indian descent. Jayant was the firstborn of the five sons of Mulji Prabhudas Madhvani (1894–1958), the industrialist, entrepreneur who founded the Madhvani Group of Companies in 1930.

Nimisha grew up at the family estate in Kakira, about an hour and one half's drive east of the capital, Kampala. When dictator Idi Amin expelled Ugandan Asians in 1972, she located to the United Kingdom with her family, as a 13-year-old teenager.