Ricky Lynn Waddell (born 31 October 1959) is a retired lieutenant general in the United States Army Reserve who last served as the Assistant to the Chairman of the Joint Chiefs of Staff from 2018 to 2021. He served as a Deputy National Security Advisor to President Donald Trump from 2017 to 2018. His promotion to lieutenant general was authorized by the United States Senate on 26 September 2019. He retired on 1 October 2021.