Lindsey Sin was appointed as Secretary of CalVet by Governor Gavin Newsom on May 26, 2023. She has served in several roles at CalVet since 2011, including Deputy Secretary of Communications and Deputy Secretary of Women Veterans Affairs. Sin is the first woman to serve as Secretary of CalVet since the appointment of Virginia Mae Days as Director in 1975.

After graduating from high school in her hometown of Sacramento, Lindsey enlisted in the U.S. Navy and served from 1997 until 2005 as a Cryptologic Technician Interpretive in the Arabic language. She completed two flight tours in Rota, Spain during which time she deployed in support of Operations Northern Watch, Southern Watch, Enduring Freedom, and Iraqi Freedom, and achieved the rank of Petty Officer First Class with Naval Aviation and Naval Aircrew designations.

After separating from the Navy, Lindsey returned to Sacramento and worked as the Lead Certifying Official for veterans services at American River College. She continued her work with veterans at Sacramento State as the Veterans Benefit Advisor and Certifying Official, focusing on developing programs for student veterans. Lindsey has a BA in History, Magna Cum Laude, from Sacramento State and an MBA from Drexel University. She resides in Sacramento with her husband and two children.