Elena Rodenbaugh Proctor Slough (July 8 1889-October 5 2003) was the oldest person in the United States from the death of Mary Christian in April 2003 until her own death that October. After her death, the oldest person in the United States was Charlotte Benkner.

Born in Horsham, Pennsylvania, she married twice and had children by each marriage. Her nonagenarian daughter died three days before her, at the same Cape May, New Jersey nursing home.

Some sources date her birth to 1888 but that is based on more recent records than those fixing her birth as in 1889.