| Office: | High Commissioner of India to the United Kingdom |
| Term Start: | 23 June 2020 |
| Term End: | 30 June 2022 |
| Predecessor: | Ruchi Ghanashyam |
| Successor: | Vikram Doraiswami |
| Office1: | Ambassador of India to Belgium and the EU |
| Term Start1: | 17 April 2017 |
| Term End1: | June 2020 |
| Predecessor1: | Manjeev Singh Puri |
| Successor1: | Santosh Jha |
| Birth Date: | 20 June 1962 |
| Birth Place: | Bangalore, Karnataka, India |
| Occupation: | Indian Foreign Service |
| Honorific Suffix: | IFS |
| Honorific Prefix: | Her Excellency |
Gaitri Issar Kumar (born 20 June 1962) is a retired Indian Foreign Service officer from the 1986 batch. Her last posting was as the High Commissioner of India to the United Kingdom. Prior to that, she served as Ambassador to Belgium, the European Union and Luxembourg. She also had stints as the Deputy Chief of Mission at the Indian Embassy in Paris, and Counselor in the Permanent Mission of India in Geneva as well as at the Ministry of External Affairs in Delhi.
Kumar was born on 20 June 1962 in Bangalore to a Punjabi family. She completed her early education at Sophia High School and her graduation from Bangalore University where she studied history, economics and political science.
She joined the Indian Foreign Service as part of the 1986 batch of officers . After serving in several roles, including as the social secretary to the President of India in 2012,[1] [2] Kumar was appointed Ambassador to Belgium and the European Union on 14 June 2017.[3] After the retirement of her predecessor Ruchi Ghanashyam, Kumar became the High Commissioner in London in June 2020.[4] As High Commissioner, Kumar prioritized deepening Indo-UK ties and trade post-Brexit.[5]