Kattis Ahlström (Katarina Sofie Ahlström), born 9 June 1966 in Gothenburg, is a Swedish journalist and TV presenter. She is a sister of Gabriella Ahlström.
She hosted the Eurovision Song Contest 2000 together with Anders Lundin, in the , and announced the Swedish results in the Eurovision Song Contest 2003. From 28 July 2006, she has been employed at the Sveriges Radio P1 channel.