| Rigidity Optimized Conformational Kinetics | Academic & Science |
| Rigidity Optimized Confirmation Kinetics | Academic & Science |
| Gibraltar Steel Corporation | Business |
| Reaching Our Communities Kids | Community |
| Recreational Opportunities for Coastal Kids | Community |
| Reaching Out for Concerned Kids | Community |
| Reaching Out To Community Kids | Community |
| Really Outrageous Catholic Kids | Community |
| Reaching Out To Communities And Kids | Community |
| Recycle Old Computers For Kids | Community |
| Raising Our Christian Kids | Community |
| Really Outstanding Christian Kids | Community |
| Restoring Our Community Kinship | Community |
| Reaching Others For Christ's Kingdom | Community |
| Ride On Center For Kids | Community |
| Resources Of The Christian Kind | Community |
| River Otters Campfire Kids | Community |
| Righteous Omnipresent Caring King | Community |
| Relying On Christ The King | Community |
| Relational Outreach Creating Kingship | Community |
| Reflections On Christ's Kingdom | Community |
| Radically Outrageous Christian Kids | Community |
| Reaching Out For Christ To Kids | Community |
| Reaching Our Community Kidz | Community |
| Rebuilding On Conservative Kornerstone | Community |
| Revival Of Catholic Kids | Community |
| Reaching Others through Christ's Kingdom | Community |
| MoonRock | Cryptocurrency |
| Rely on Christ the King | General |
| Respectful Organized Cooperative Knowledgeable | General |
| Relationships Outreach Christ Kids | General |
| Real Options for City Kids | General |
| Rollergirls Of Central Kentucky | General |
| Robert Orin Charles Kilroy | General |
| Redirecting Our Curfew Kids | General |
| Racing Oil Cooler Kit | General |
| Raisers Of Contagious Killing | General |
| Representative of Canada in Kandahar (Afghanistan) | Governmental |
| Reaching Out To Cancer Kids | Medical |
| Rigidity Optimized Conformation Kinetics | Medical |
| Representative of Canada in Kandahar | Regional |