Barbara Allen (born February 8, 1961) is a Republican, Kansas state senator from the 8th District.
Allen graduated with a Bachelor of Science from Mount Vernon College for Women (now the George Washington University Mount Vernon campus) and a degree from the University of Missouri–Kansas City Law School.
In the 2000 election, she won a seat in the Kansas Senate, where she served for two terms.
Unable to be treated in Kansas, Allen sought treatment at the Dana–Farber Cancer Institute in Boston.
After 12 rounds of chemotherapy, 33 radiation treatments, and surgery, doctors said that they could not detect any cancer.