Tema
- Romic Chemical Company1
- Ron Davis1
- Ron Drake1
- Ronald Keith Shelby1
- Ronnie "Rabbit" Gray1
- Roy Adger1
- Royal Supermarket1
- Royal Tongan Brass Band1
- Ruben Abrica1
- Ruben Barrales1
- Rudy Love1
- Ruthie Smith-Wilkes1
- SMC Arts Council1
- SMC Grand Jury1
- SMC Local Agency Formation Commision (LAFCo)1
- Sakisa Thompson1
- Sam Jordan1
- San Mateo County Board of Supervisors1
- San Mateo County Police Department1
- San Mateo County Sheriff Office1