| Stefano Palmieri | |
| Office: | Captain Regent of San Marino |
| Alongside: | Matteo Ciacci |
| Term Start: | 1 April 2018 |
| Term End: | 1 October 2018 |
| Predecessor: | Enrico Carattoni Matteo Fiorini |
| Successor: | Mirko Tomassoni Luca Santolini |
| Alongside2: | Francesco Mussoni |
| Term Start2: | 1 October 2009 |
| Term End2: | 1 April 2010 |
| Predecessor2: | Massimo Cenci Oscar Mina |
| Successor2: | Marco Conti Glauco Sansovini |
| Birth Date: | 18 September 1964 |
| Birth Place: | Serravalle, San Marino |
| Party: | Future Republic Popular Alliance |
| Profession: | Accountant |
Stefano Palmieri (born 18 September 1964) is a Sammarinese politician, who served as a Captain Regent of San Marino together with Matteo Ciacci from 1 April 2018 to 1 October 2018. He had previously served in the same position for the semester from 1 October 2009 to 1 April 2010, alongside Francesco Mussoni.[1]
Member of the Popular Alliance (Alleanza Popolare), Palmieri has been in the Grand and General Council since 2006. He was one of the founders of "Movimento Biancoazzurro" which merged into Alleanza Popolare in 2005.
Palmieri is a certified accountant, married and father of two sons.