Exhibit 21.1
SUBSIDIARIES
| Incorporation/Organization |
Jurisdiction of | |
| Mastech Digital Technologies, Inc. | Pennsylvania | |
| Mastech Digital Alliances, Inc. | Pennsylvania | |
| Mastech Digital Resourcing, Inc. | Pennsylvania | |
| Mastech Digital Services, Inc. | Pennsylvania | |
| Mastech Digital Consulting, Inc. | Pennsylvania | |
| Mastech Digital Solutions, Inc. | Pennsylvania | |
| Mastech Digital InfoTech, Inc. | Pennsylvania | |
| Mastech Digital Systems, Inc. | Pennsylvania | |
| Mastech Digital Data, Inc. | Delaware | |
| Mastech Digital Pvt, Ltd. | India | |
| Mastech InfoTrellis, Inc. | Delaware | |
| Mastech InfoTrellis Digital, Ltd. | Canada | |
| InfoTrellis India Pvt, Ltd. | India | |
| Mastech InfoTrellis, Ltd. | England & Wales | |
| Mastech InfoTrellis Limited | Ireland | |
| Mastech Digital Infotech Pvt, Ltd. | India |