Yann Dedet (born January 25, 1946) is a French film editor and actor. Dedet has been working in film editing since the early 1970s.

He often worked for film directors François Truffaut, Maurice Pialat and Nicole Garcia. His work includes more than 80 film and television productions. In 2012, Dedet was awarded the César Award for Best Editing with his co-editor Laure Gardette for the 2011 film Polisse.