Elisabeth Cornelia "Els" Vader (married Scharn) (24 September 1959 – 8 February 2021) was a Dutch track and field sprinter. She competed at the 1980, 1984 and 1988 Summer Olympics in the 100 m, 200 m and 4 × 100 m relay (in 1988 only), but failed to reach the finals in any event.