Politics and Business magazines
- Duplex Products Inc.
- Durametallic
- Duriron Company Inc.
- Dürkopp Adler AG
- Duron Inc.
- Dürr AG
- Duty Free International, Inc.
- Duvernay Oil Corp
- DVI, Inc.
- Dyax Corp.
- Dyckerhoff AG
- Dycom Industries, Inc.
- Dyersburg Corporation
- Dylex Limited
- Dynaction S.A.
- Dynamic Materials Corporation
- Dynatec Corporation
- Dynatech Corporation
- DynCorp
- Dynea