Dennis Leeflang (born 22 May 1979, in Leiderdorp) is a Dutch rock drummer, currently living in Los Angeles.

In 2006, Leeflang rejoined the Saturnine as an inter-continental recording project with occasional live performances in Europe.

Leeflang has recorded drums for many artists, including Anneke van Giersbergen, Tiffany Giardina, Ted Poley, Angus Clark and Russian pop star Zemfira.

He has worked with producers such as Ken Caillat, Mikal Blue, PJ Bianco, Nick Sansano and Easy Mo Bee.

Dennis is also a founding member (along with Chris Szkup and Richard Anderson), Drummer and Mixing Engineer for the worldwide studio project The Feckers,[3] some of the people who have recorded with The Feckers include Ron "Bumblefoot" Thal, Neil Murray, Tommy Denander, Richard Fortus, Brett Garsed, Kyle Whalum, Melvin Brannon Jr, Lydia Salnikova, Tony Franklin, Joey Huffman, Jonathon Noyce, Alessandro Bertoni, Chris Sligh, Tūranga Morgan-Edwards, Kyle Thomas, Zak Lloyd.