David C. Giuntoli (born June 18, 1980) is an American actor. He's best known for his roles as Det. Nick Burkhardt on NBC's supernatural drama Grimm (2011–2017), and Eddie Saville on ABC's drama A Million Little Things (2018–2023). He has appeared in films such as 13 Hours: The Secret Soldiers of Benghazi (2016) and Buddymoon (2016).

He first gained attention as a participant on MTV's Road Rules: South Pacific, and later on Real World/Road Rules Challenge: The Gauntlet. In 2007, he moved to Los Angeles, CA to pursue an acting career. He has appeared on several TV series including Nip/Tuck, Veronica Mars, Grey's Anatomy, Ghost Whisperer, Privileged, Without a Trace, and Cold Case, among others. He also hosted AT&T U-Verse "Buzz". His music career has not been as successful, but he has performed with German DJ Flula Borg, his occasional co-host on "Buzz," at The Viper Room in Los Angeles.

He married his Grimm co-star, actress Elizabeth Tulloch in June 2017. They have a daughter, Vivian, who was born in February 2019.