The Yelamu were a tribelet of Ohlone people from the San Francisco Bay Area in Northern California. The term Yelamu, or "the western people" was used by east bay Ohlone to describe the Ohlone people living on the San Francisco Peninsula. A more correct identification is Ramaytush, according to an account by J.P. Harrington made in 1921 by a Chochenyo Ohlone who identified the peninsula as "ramai". Ramaytush was also the language spoken by them. 
Randall Milliken's study, "A Time of Little Choice: The Disintegration of Tribal Culture in the San Francisco Bay Area 1769-1810,"  estimates that 160 to 300 Yelamu were living in San Francisco when the Spanish opened Mission San Francisco de Asís on June 30, 1776.
Artifacts have been found across San Francisco from at least 50 different locations during modern construction activities within the city that were originally left by the three primary nomadic communities that moved seasonally from location to location around present day San Francisco. Additional villages existed to the south of San Francisco as well.
According to anthropologists the Yelamu people and their Ohlone neighbors arrived here between 4,000-6,000 years ago. They lived on the northern tip of the San Francisco Peninsula in the region comprising the City and County of San Francisco before the arrival of Spanish missionaries in 1769.
The first four Yelamu people who converted to Christianity were baptized by Father Palou and Father Santa Maria between 1777 and 1779. They were absorbed into the Mission San Francisco de Asís that was founded in 1776 by the Spaniards, and became some of the first "Mission Indians" in the San Francisco area.
The largest of the three San Francisco groups had its winter village at Tubsinthe, near Candlestick Point and its summer home at Amuctac in Visitacion Valley. The second group moved between their summer camp at Chutchui village located along Mission Creek in the Mission and Sitlintac on the edge of Mission Bay that was filled in during the 19th century. The third community lived near Crissy Field at Petlenuc. The Yelamu/Ramai villages south of San Francisco:
- Ompuromo - Southwest of Lake Merced
- Timigtac - Near present day Pacifica
- Pruristic - Present day Pacifica
- Siplichiquin - Present day San Bruno
See List of Ohlone villages for a larger list.
- Kamiya, Gary (January 22, 2016). "S.F.'s first residents: Marshlands drew Indians to a barren spit". San Francisco Chronicle. Retrieved 16 December 2017.
- Milliken, Randall (1995). A Time of Little Choice: The Disintegration of Tribal Culture in the San Francisco Bay Area, 1769-1810. Ballena Press. p. 364. ISBN 978-0879191313. Retrieved 16 December 2017.
- Brown, Alan K. Indians of San Mateo County, La Peninsula:Journal of the San Mateo County Historical Association, Vol. XVII No. 4, Winter 1973-1974.
- Brown, Alan K. Place Names of San Mateo County, published San Mateo County Historical Association, 1975.
- Milliken, Randall. A Time of Little Choice: The Disintegration of Tribal Culture in the San Francisco Bay Area 1769-1910 Menlo Park, CA: Ballena Press Publication, 1995. ISBN 0-87919-132-5 (alk. paper)
- Teixeira, Lauren. The Costanoan/Ohlone Indians of the San Francisco and Monterey Bay Area, A Research Guide. Menlo Park, CA: Ballena Press Publication, 1997. ISBN 0-87919-141-4.