| SRN | Sabine River and Northern 
| Others |
| SRN | Sabine River and Northern Railroad
| Others |
| SRN | Sabine River and Northern RR Company
| Others |
| SRN | Safe Ride News
| Others |
| SRN | Safety Recall Notice
| Others |
| SRN | Salem Radio Network
| Others |
| SRN | Salt-Resistant Normotensive
| Others |
| SRN | Sample Reference Number
| Others |
| SRN | Saunders Roe Nautical
| Others |
| SRN | Scholarship Research Network
| Others |
| SRN | Scholarship Resource Network
| Others |
| SRN | School Research Nexus
| Others |
| SRN | Scottish Recovery Network
| Others |
| SRN | Screenwriting Research Network
| Others |
| SRN | Security Reference Number
| Others |
| SRN | Securityholder Reference Number
| Others |
| SRN | Service Request Number
| Others |
| SRN | Session Registration Number
| Others |
| SRN | Shareholder Reference Number
| Others |
| SRN | SHEA Research Network
| Others |
| SRN | Shipping Release Note
| Others |
| SRN | Shipping Requirements Notification
| Others |
| SRN | Siebel Random Number
| Others |
| SRN | Silva Research Network
| Others |
| SRN | Simple Recurrent Netwok
| Others |
| SRN | Simple Requesting Node
| Others |
| SRN | Simultaneous Recurrent Network
| Others |
| SRN | Sleep and Respiratory Neurobiology
| Others |
| SRN | Sniper's Redemption Network
| Others |
| SRN | Software Release Note
| Others |
| SRN | Software Release Notice
| Others |
| SRN | Software Research Northwest, Inc.
| Others |
| SRN | Source Ring Number
| Others |
| SRN | Source Routing for Noc
| Others |
| SRN | Space Ruler Number
| Others |
| SRN | Spaulding Rehabilitation Network
| Others |
| SRN | Spiritual Research Network
| Others |
| SRN | Sports Radio Network
| Others |
| SRN | Staffing Resource Network
| Others |
| SRN | Stanford Research Network
| Others |
| SRN | State Registered Nurse
| Others |
| SRN | State Registration Number
| Others |
| SRN | State Resource Network
| Others |
| SRN | Statewide Referral Network
| Others |
| SRN | Stichting Reclassering Nederland
| Others |
| SRN | Stone Repair Network
| Others |
| SRN | stop rubbernecking and
| Others |
| SRN | Straight Run Naphtha
| Others |
| SRN | Strategic Resources Network
| Others |
| SRN | Strategic Road Network
| Others |
| SRN | Street Rod Nationals
| Others |
| SRN | Street Rodder News
| Others |
| SRN | Student Record Number
| Others |
| SRN | Subretinal neovascular membrane
| Others |
| SRN | Super Really Nice
| Others |
| SRN | Superficial Radial Nerve
| Others |
| SRN | Support Reference Number
| Others |
| SRN | Suppress Row Names
| Others |
| SRN | Sustainability Research Network
| Others |
| SRN | Sustainability Research Networks
| Others |
| SRN | Sustainable Research Network
| Others |
| SRN | Synchrotron Radiation News
| Others |
| SRN | Syringe
| Others |