| Name of Subsidiary | Jurisdiction of Incorporation | |
| Qualys International, Inc. | United States | |
| Qualys Brazil Desenvolvimento de Produtos e Consultoria de Tecnologias de Seguranca LTDA. | Brazil | |
| Qualys Canada, Ltd. | Canada | |
| Qualys Technologies, S.A. | France | |
| Qualys GmbH | Germany | |
| Qualys Hong Kong Limited | Hong Kong | |
| Qualys Security TechServices Private Ltd. | India | |
| Qualys Japan K.K. | Japan | |
| Qualys (Beijing) Information Technology Ltd. Corp. (1) | China | |
| Qualys Singapore Pte. Ltd. | Singapore | |
| Qualys Middle East FZE | United Arab Emirates | |
| Qualys Ltd. | United Kingdom | |
| Qualys Australia Pty Ltd. | Australia | |
| Qualys Switzerland Sarl | Switzerland | |
| Qualys Colombia S.A.S. | Colombia | |
Qualys South Africa Proprietary Limited | South Africa | |
