Sarah McIlduff (née Zelenka; born June 8, 1987) is an American rower.

She was a member of the 2012 US Summer Olympic team, having competed in the women's pair race.

She started rowing during her freshman year of college at Grand Valley State University.

In 2008, Zelenka helped lead Grand Valley's women's eight to the American Collegiate Rowing Association national title.

[2] In the 2010 World Rowing Cup, Zelenka won golds in the women's four and eight.