HSO
# HSO

HSO may refer to:

## Orchestras

* Harrisburg Symphony Orchestra, in Harrisburg, Pennsylvania, United States
* Hartford Symphony Orchestra in Hartford, Connecticut, United States
* Helena Symphony Orchestra, in Helena, Montana, United States
* Hereford String Orchestra, in Hereford, England
* Hillsboro Symphony Orchestra, in Hillsboro, Oregon, United States
* Hollywood Symphony Orchestra, in Los Angeles, California, United States
* Houston Symphony, in Houston, Texas, United States
* Huntsville Symphony Orchestra, in Huntsville, Alabama, United States

## Other uses

* Ford HSO engine
* Hamburg State Opera
* Health Sciences Online
* Healthscope, an Australian hospital operator
* Herschel Space Observatory
* Hungarian Space Office
