William Rust Summit
{{Short description|Mountain in California, United States}}
{{Use mdy dates|date=January 2025}}
{{Infobox mountain
| name = William Rust Summit
| photo =
| photo_caption =
| elevation_ft = 1004
| elevation_ref = {{NAVD88}}{{cite gnis |id=251977 |name=William Rust Summit |accessdate=2009-07-02}}
| prominence =
| location = Contra Costa County, California, U.S.
| range = Berkeley Hills
| map = USA California
| map_caption = Location in California
| map_size = 200
| coordinates = {{coord|37.9263134|N|122.2908028|W|type:mountain_region:US-CA_scale:100000_source:GNIS|format=dms|display=inline,title}}
| range_coordinates =
| topo = USGS Richmond
| type =
| age =
| last_eruption =
| first_ascent =
| easiest_route =
}}
William Rust Summit or Willhelm Rust Summit is a summit in Contra Costa County, California in the Berkeley Hills above the city of El Cerrito. It was named in honor of William Rust (1857–1940), a pioneer settler who was active in business & community affairs.
{{cite web
| url = http://elcerritowire.com/history/pages/countyline.htm
| archive-url = https://web.archive.org/web/20061011082407/http://www.elcerritowire.com/history/pages/countyline.htm
| url-status = usurped
| archive-date = October 11, 2006
| title = Contra Costa/Alameda County Line
| publisher = El Cerrito Historical Society
| date = October 1975 – June 2006
| accessdate = 2007-08-01 }}