| Abbreviation | Definition |
|---|---|
| RLB | Rated Load Break |
| RLB | Re Locatable Building |
| RLB | Redding Linden Burr |
| RLB | Regulated Lag Ballast |
| RLB | Respondus Lockdown Browser |
| RLB | Rider Levett Bucknall |
| RLB | Rock League Baseball |
| RLB | Rogers Loves Barnes |
| RLB | Ronald L Branch |
| RLB | Rotten Lying Bastards |
| RLB | Round Lake Brewster |
| RLB | Ruscitto Latham Blanton |
| RLBS | Ricardo La Bella Simonetti |
| RLC | Randam Luck Crew |
| RLC | Recognition Labeling and Community |
| RLC | Recovery Learning Community |
| RLC | Registered Lactation Consultant |
| RLC | Rescuing Leftover Cuisine |
| RLC | Residential Learning Communities |
| RLC | Resource and Learning Center |