MD-3
| Brand | Monarch |
| Manufacturer | Monarch Electronics International, Inc. |
| Function | Turntable Cartridge |
| Produced | 1964 |
| Country | United States |
| Form Factor | ½" Standard Mount |
| Signal Path | Analog Hardware |
| Styli | 05mil, 0.7mil |
| MSRP (1964) | $14.95 (Distributor Price (1964): $8.25) |
| Channels | 2 Channel |
| Notes | Comes with MD-5 0.5mil and MD-7 0.7mil stylii. |