Ellen Walther (born 26 May 1999) is a Swiss para-snowboarder in the SB-LL1 category.
Walther won the bronze medal in the women's dual banked slalom SB-LL1 event at the 2021 World Para Snow Sports Championships held in Lillehammer, Norway. She also won the bronze medal in the women's snowboard cross SB-LL1 event. Along with Romy Tschopp, Walther won the bronze medal in the women's team event.