| SAD | Seasonal Affective Disorder 
| Others |
| SAD | Seasonal Allergy Distress
| Others |
| SAD | Secure Agent Development
| Others |
| SAD | Secure Autonomous Driving
| Others |
| SAD | Security Administration
| Others |
| SAD | Security Association Database
| Others |
| SAD | Seek and Destroy
| Others |
| SAD | Selected Area Diffraction
| Others |
| SAD | Semi Active Damper
| Others |
| SAD | Semi Autonomous Driving
| Others |
| SAD | Separation Anxiety Disorder
| Others |
| SAD | Serveron Analyzer data
| Others |
| SAD | Service Administrative Driver
| Others |
| SAD | Severe Acronym Deficiency
| Others |
| SAD | Shapes And Designs
| Others |
| SAD | Shiromani Akali Dal
| Others |
| SAD | Shocking Anxiety Development
| Others |
| SAD | Shuttle Authorized Document
| Others |
| SAD | Silicon Avalanche Diode
| Others |
| SAD | Silly And Disruptive
| Others |
| SAD | Simple Anxiety Defect
| Others |
| SAD | Simple Anxiety DefectB
| Others |
| SAD | Sindicatul Automobile Dacia
| Others |
| SAD | Single Administrative Document
| Others |
| SAD | Single Ascending Dose
| Others |
| SAD | Single Awareness Day
| Others |
| SAD | Single, Available, and Desperate
| Others |
| SAD | Singles Awareness Day
| Others |
| SAD | Sinoaortic denervation or deafferentiation
| Others |
| SAD | Situation Awareness Display
| Others |
| SAD | Situational Affected Depression
| Others |
| SAD | Skoda Auto Deutschland
| Others |
| SAD | Smart Ack Dropper
| Others |
| SAD | Social Anxiety Disorder
| Others |
| SAD | Socrates Action Day
| Others |
| SAD | Solar Array Deployment
| Others |
| SAD | Sons and Daughters
| Others |
| SAD | Soul Assassin Demon
| Others |
| SAD | Source to Axis Distance
| Others |
| SAD | Source-Axis Distance
| Others |
| SAD | South Atlantic Division
| Others |
| SAD | Space Artillery Drill
| Others |
| SAD | Spacecraft Attitude Display
| Others |
| SAD | Special Activities Database
| Others |
| SAD | Special Activities Division
| Others |
| SAD | Special Assessment District
| Others |
| SAD | Spring Alfa Day
| Others |
| SAD | Stand Alone Device
| Others |
| SAD | Stand Alone Dump
| Others |
| SAD | Stand For Acronym Database
| Others |