Kathryn Marie McDonald (born 25 September 1948), popularly known as Kathi McDonald, is a blues and rock singer. She currently performs with Kathi McDonald & Friends. She has appeared on an extensive list of rock and blues albums and toured extensively with Long John Baldry prior to his death. She and Baldry enjoyed pop success in Australia where their duet "You've Lost That Lovin' Feelin'" reached No. 2 in 1980.
Kathi was born in Anacortes, Washington and resides in the Seattle Washington state area but still has strong San Francisco music connections. In February 2009 she performed at the opening gala for the San Francisco Museum of Performance & Design along with Sam Andrews. Welcoming in a new museum dedicated to the art and music of San Francisco of the 1965-1975 era.