The Apple USB Modem was a combined 56 kbit/s data modem and 14.4 kbit/s fax external USB modem introduced by Apple Inc. after the internal 56k modem was dropped on the October 12, 2005 iMac G5 revision. While it looks identical, it's not to be confused with Apple's optional USB Ethernet Adapter accessory, available for its MacBook Air range of laptops since 2008.

Apple introduced its first true modems in 1984, the Apple Modem 300 & 1200 modems (V21/V22). Prior to that they offered a third party Apple-badged comparatively low-tech acoustic coupler. Those were followed by the industry standard 2400/data and combined 9600/fax (V29) Apple Fax Modem in 1987. Apple introduced the internal 2400 data/fax modem card for its Macintosh Portable in 1989 as well as released its last external desktop Apple Data Modem 2400. Only standard internal modems were offered during the 1990s through 2005, with the notable exception of Apple's foray into GeoPort passive telephony modems which relied heavily upon the computer's software and processing power rather than dedicated hardware (like Apple's proprietary internal Express Modem). The Apple USB Modem is Apple's first true external modem since the Apple Data Modem 2400 was discontinued in 1992.