| PCLS | Painesville City Local Schools 
| Others |
| PCLS | Parent-Child Literacy Strategy
| Others |
| PCLS | Partially Constrained Least Squares
| Others |
| PCLS | Peak Constrained Least Squares
| Others |
| PCLS | Pediatric Consultation Liaison Service
| Others |
| PCLS | Pennington Center Longitudinal Study
| Others |
| PCLS | Pension Commencement Lump Sum
| Others |
| PCLS | Per Capita Loans Sanctioned
| Others |
| PCLS | Physicians Choice Laboratory Services
| Others |
| PCLS | Pierce County Library System
| Others |
| PCLS | Pierce County Library System's
| Others |
| PCLS | Plum Creek Library System
| Others |
| PCLS | Pollution Control Law Series
| Others |
| PCLS | Pollution Control Licensing System
| Others |
| PCLS | Portable Common LISP Subset
| Others |
| PCLS | Postulate of Constant Light Speed
| Others |
| PCLS | Precast Concrete Liner Segments
| Others |
| PCLS | Precision Cut Liver Slices
| Others |
| PCLS | Precision Cut Lung Slices
| Others |
| PCLS | Precision Cut Lung/Liver Slices
| Others |
| PCLS | Princeton Chinese Language School
| Others |
| PCLS | Probability of Clear Line of Sight
| Others |
| PCLS | Property Claim Law Specialist
| Others |
| PCLS | Psychiatry Consult-Liason Service
| Others |
| PCLS | Psychiatry Consultation Liaison Service
| Others |