| RUN | |
| abbr. | Rufas Universal Network; Rundi |
| abbr. avia. | St. Denis de la Reunion, Indian Ocean |
| abbr. comp., net. | Regular Update of NetWare |
| abbr. file.ext. | Rewind/Unload |
| abbr. IT | Batch file |
| abbr. law | Research Use Only |
| abbr. relig. | Reaching The Unevangelized Now |
| abbr. st.exch. | Reunion Industries, Inc. |
| comp. IT | Rewind and Unload |
| only | |
| abbr. | o |