The D-Semi Public Semiconductor Directory brings home the fact that very few semiconductor companies begin with the letter D. Still though, there are over 100 semiconductor companies that begin with the letter D and about 10 percent of those are public.
| Daqo New Energy Corp – | DQ | Investor Relations | Semiconductor Materials> Solar |
| Darwin Precisions Corp | 6120.TW | Monthly Revenue | Systems, Optoelectronic Displays |
| Daxin Materials | 5234.TW | Monthly Revenues | Semiconductor Materials |
| Davicom Semiconductor | 3094.TW | Monthly Revenues | Fabless |
| DBHitek | 000990.KS | Investor Relations | Foundry |
| Dialog Semiconductor (Renesas) | IDM>Memory>RRAM | ||
| Diodes, Inc. | DIOD | Investor Relations | IDM>Discrete |
| DNP Group (Dai Nippon Printing Co., Ltd.) | 7912.T | Investor Relations | Semiconductor Equipment>Photomasks |
| Dupont | DD | Investor Relations | Semiconductor Materials |
| D-Wave Quantum Inc. | QBTS | Investor Relations | Quantum Computer>Photonics |