Kerri Yascheshyn (1985-2003) was a Canadian resident of the town of Windsor who suffered liver cancer. Yascheshyn was a big fan of singer Madonna.

Yascheshyn, who wanted to become an actress, had been an admirer of the American performer for a long time when a telephone call between her and her idol was arranged by the Children's Wish Foundation. She and Madonna became friends instantly and Madonna began to call her almost every day. Madonna also sent her gifts and, according to Kerri's mother, Gail Yascheshyn, Madonna also would offer her daughter encouraging words in hopes to help her keep thinking positive.

The friendship between Kerri Yascheshyn and her idol became headline news, many newspapers in Canada writing about it.

Yascheshyn suffered a very rare but dangerous type of liver cancer.