| Name | Phone | Category |
| Kan Zamman LLC / Kan Zeman Restaurant | 650-324-1503 | Restaurants, Cafes & Catering |
| Keenan Land Co. | 650-614-6246 | Real Estate |
| Keller Williams Realty | 650-454-8500 | Real Estate |
| Kennedy Kruises & Travel | 650-854-9649 | Travel Services |
| Don Kensil | 650 965-4112 | |
| Kevin Low D.D.S. & Whitney Lorenz | 650-327-7060 | Dentists |
| Keys School | 650-328-1711 | Education |
| Candice Kistner, State Farm Insurance | 650-424-1100 | Business Referral Network Members |
| Kiwanis Club of Palo Alto | 650-852-0652 | Associations, Clubs & Organizations |
| Kohler Associates, Architects | 650-328-1086 | Architects |
| Konica Minolta Business Solutions U.S.A., Inc. | 408-437-7505 | Copier Sales & Service |