Kristine Meredith Flaherty (born June 30, 1985), better known as K.Flay, is an American singer, musician, songwriter, and rapper. She has released five studio albums: Life as a Dog (2014), Every Where Is Some Where (2017), Solutions (2019), Inside Voices / Outside Voices (2022), and Mono (2023).

Life as a Dog peaked at No. 2 on Billboard's Heatseekers Albums chart and No. 14 on Billboard's Rap Albums chart. Every Where Is Some Where was nominated for the Grammy Award for Best Engineered Album, Non-Classical, while its lead single "Blood in the Cut" was nominated for the Grammy Award for Best Rock Song. K.Flay is also known for collaborating with artists such as Dune Rats, Grandson, Mike Shinoda, Party Favor, Tom Morello, Travis Barker, Vic Fuentes, and X Ambassadors.