1140s ke ngwagasome tšhupamabakeng ya Gregorian wa go thoma ka 1 Pherekgong 1140 ya fela ka 31 Manthole 1149. Ngwagasome 1140s o wela ngwagengkgolo wa 12.
| Ngwagakete: | Ngwagakete 2 |
| Mengwagakgolo: | Ngwagakgolo 11 – Ngwagakgolo 12 – Ngwagakgolo 13 |
| Mengwagasome: | 1110s 1120s 1130s – 1140s – 1150s 1160s 1170s |
| Mengwaga: | 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 |
| 1140s-tšago tswalanya: |