Lindsay Nicole Warkentin (born Titheridge, November 8, 1982 in Winnipeg, Manitoba) is a Canadian curler. She previously played lead for the Chelsea Carey team. As a junior curler, Warkentin represented Manitoba at the 1999 Canada Winter Games, and she won the Manitoba junior championship in 2001, playing second for Allison Nimik (Flaxey). The team represented Manitoba at the 2001 Canadian Junior Curling Championships, where they finished with a 4-8 record. In 2003, Titheridge lost in the Manitoba junior final.