| Ivan Demerdzhiev | |
| Native Name Lang: | bg |
| Office: | Deputy Prime Minister of Bulgaria |
| Primeminister: | Galab Donev |
| Term Start: | 2 August 2022 |
| Term End: | 6 June 2023 |
| Predecessor: | Asen Vasilev Korneliya Ninova Grozdan Karadjov |
| Successor: | Mariya Gabriel |
| Alongside: | Atanas Pekanov, Lazar Lazarov and Hristo Alexiev |
| Office1: | Minister of Interior |
| Term Start1: | 2 August 2022 |
| Term End1: | 6 June 2023 |
| Primeminister1: | Galab Donev |
| Predecessor1: | Boyko Rashkov |
| Successor1: | Kalin Stoyanov |
| Office2: | Minister of Justice |
| Primeminister2: | Stefan Yanev |
| Term Start2: | 29 October 2021 |
| Term End2: | 13 December 2021 |
| Predecessor2: | Yanaki Stoilov |
| Successor2: | Nadezhda Yordanova |
| Office3: | Deputy Minister of Justice |
| Primeminister3: | Stefan Yanev |
| Minister3: | Yanaki Stoilov |
| Term Start3: | 12 May 2021 |
| Term End3: | 29 October 2021 |
| Birth Date: | 1 January 1975 |
| Birth Place: | Plovdiv, Bulgaria |
| Alma Mater: | Plovdiv University |
| Party: | Independent |
Ivan Demerdzhiev (born 1 January 1975) is a Bulgarian attorney and politician who served in four caretaker governments during the 2021–2023 Bulgarian political crisis.[1] [2] He is married and has two children.[3]