| Acronym | Definition |
|---|
| TCII➣Transcobalamin II |
| TCII➣Technical Committee on Intelligent Informatics |
| TCII➣Technical Committee on Information Infrastructure (IEEE) |
| TCII➣TCI International, Inc. (stock symbol) |
| TCII➣Time Crisis II (game) |
| TCII➣Telecom Consultants International, Inc. |
| TCII➣Trade Consultants International Inc. |
| TCII➣Tien Chien II (missile) |
| TCII➣Tactical Command Industries, Inc. |