| Parent | Grenda Corporation |
|---|---|
| Ceased operation | January 2012 |
| Headquarters | Rosebud |
| Service area | South Eastern Melbourne |
| Service type | Bus operator |
| Routes | 4 |
| Hubs | Frankston station |
| Fleet | 45 (April 2014) |
Portsea Passenger Service was a bus operator in Melbourne, Australia. As a Melbourne bus company, it operated four bus routes under contract to the Government of Victoria. A subsidiary of Grenda Corporation, it was purchased by Ventura Bus Lines in January 2012.