Aaron Peskin is the current president of the San Francisco Board of Supervisors . He was first elected to the Board in 2000, and was re-elected in 2004.

Before entering politics, Peskin was an environmental activist and water rights negotiator for a non-profit organization which brokered passage and use rights for tribal lands . He first came to public notice as president of the Telegraph Hill Dwellers, one of San Francisco's oldest and most active neighborhood advocacy organizations.

As Supervisor, Peskin is known mostly for siding with a self-described progressive majority on development issues, being at odds with the pro-growth policies of mayors Gavin Newsom and Willie Brown. He has however developed a reputation as a pragmatist, authoring an amnesty on unwarranted "in-law" apartment construction as a strategy to blunt housing costs and promoting fiscal conservatism in city spending.