Sylvester Glacier is a glacier located in Matanuska-Susitna County, Alaska. It appears on the Anchorage C-1 SE USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 8,353.90 feet (2,546.27 m) above sea level. The nearest populated place is Eureka Roadhouse, approximately 29.7 miles to the N.