| Code | | Site | | Code | | Site | | Code | | Site |
| OAB | | Ace Bridge Club | |
OAS | | Aces and Spaces | |
OB9 | | Blue Springs Sectional | |
| OC4 | | Columbia Sectional | |
OCC | | ACBL of Chillicothe | |
OJ4 | | Jefferson City Sectional | |
| OJK | | John Knox Village DBC | |
OK4 | | Kansas City Sectional | |
OKK | | Kirksville DBC | |
| OL6 | | Lee's Summit Sectional | |
OL7 | | Lenexa Sectional | |
OMK | | Mo-Kan Friendly Friday Duplicate | |
| OMM | | JC Bridge Club | |
OMP | | Tatorcoup DBC | |
OMS | | Marshall DBC | |
| OMZ | | Mizzou DBC | |
OO5 | | Overland Park Sectional | |
OS6 | | St Joseph Sectional | |
| OSD | | Sedalia DBC | |
OSJ | | St Joe Duplicate Bridge | |
OSM | | Independence Duplicate Bridge Club | |
| OTD | | Thursday Tricks | |
OTM | | Truman Duplicate Bridge Club | |
OUT | | Uptricks DBC | |