| SR&O | Systems Requirements & Objectives 
| Others |
| SRO | Campidanese
| Others |
| SRO | Sabaean Religious Order
| Others |
| SRO | Santiago Rigonan Obien
| Others |
| SRO | Satutory Rules and Orders
| Others |
| SRO | Saudi Railways Organization
| Others |
| SRO | School Reform Office
| Others |
| SRO | School Resource Officer
| Others |
| SRO | School Resource Officers
| Others |
| SRO | Scottish Records Office
| Others |
| SRO | Search And Rescue Officer
| Others |
| SRO | Self Regulated Organizations
| Others |
| SRO | Self Regulating Organisation
| Others |
| SRO | Self Regulatory Organisation
| Others |
| SRO | Self Regulatory Organisations
| Others |
| SRO | Self Regulatory Organization
| Others |
| SRO | Self Regulatory Organizations
| Others |
| SRO | Self-Regulatory Organisation
| Others |
| SRO | Self-Regulatory Organization
| Others |
| SRO | Senior Reactor Operator
| Others |
| SRO | Senior Responsibility Officer
| Others |
| SRO | Senior Responsible Owner
| Others |
| SRO | Service Request Order
| Others |
| SRO | Sharable and Read Only
| Others |
| SRO | Short Range Order
| Others |
| SRO | Shortest Region of Overlap
| Others |
| SRO | Sierra Remote Observatories
| Others |
| SRO | Significantly Regulated Organizations
| Others |
| SRO | Silkroad Online
| Others |
| SRO | Sim Racing Online
| Others |
| SRO | Single Residence Occupancy
| Others |
| SRO | Single Resident Occupancy
| Others |
| SRO | Single Room Occupancy
| Others |
| SRO | Singular Room Occupancy
| Others |
| SRO | Sleep Research Online
| Others |
| SRO | Small Revenue Operation
| Others |
| SRO | Snake River Offroaders
| Others |
| SRO | Socially Responsible Organization
| Others |
| SRO | Sold Right Out
| Others |
| SRO | Sorry Random Outburst
| Others |
| SRO | Sorry, Random Outburst
| Others |
| SRO | Source Repair Order
| Others |
| SRO | Southern Regional Office
| Others |
| SRO | Special Residents Only
| Others |
| SRO | Special Road Order
| Others |
| SRO | Special Routine Order
| Others |
| SRO | Sponsored Research Office
| Others |
| SRO | Stand Right Outside
| Others |
| SRO | Standard Rental Option
| Others |
| SRO | Standard Rock Outfit
| Others |
| SRO | Standing Room On Ly
| Others |
| SRO | Standing Room Only
| Others |
| SRO | Standing Route Order
| Others |
| SRO | State Revenue Office
| Others |
| SRO | State Review Officer
| Others |
| SRO | State Review Officers
| Others |
| SRO | Statutory Regulatory Order
| Others |
| SRO | Statutory Regulatory Orders
| Others |
| SRO | Statutory Rules and Orders
| Others |
| SRO | Stephane Ratel Organisation
| Others |
| SRO | Sterling Realty Organization
| Others |
| SRO | Stoned Right Out
| Others |
| SRO | Strategic Readiness Officer
| Others |
| SRO | Student Records Office
| Others |
| SRO | Student Resource Officer
| Others |
| SRO | Student Run Organization
| Others |
| SRO | Studio and Remote Operations
| Others |
| SRO | Sub-Regional Office
| Others |
| SRO | Subject-Reported Outcome
| Others |
| SRO | Sunday Race Off
| Others |
| SRO | Supervisor Range Operations
| Others |
| SRO | Support Removal Only
| Others |
| SRO | Survey Research Operations
| Others |
| SRO | System Readiness Objective
| Others |