The USB Implementers' Forum (USB-IF) is a non-profit organization to promote and support the Universal Serial Bus. Its main activities are the promotion and marketing of USB, Wireless USB, USB On-The-Go, and the maintenance of the specifications, as well as a compliance program.

It was formed in 1995 by the group of companies that developed USB. Notable members include Apple Inc., Hewlett-Packard, NEC, Microsoft, Intel, and Agere Systems.

The working committees within USB-IF are:

Device Working Group
Compliance Committee
Marketing Committee
On-The-Go Working Group
The USB-IF web caters for developers who can freely sign up to the developer web-forums and access documentation, however to join a working group one has to work for a member company or register as a member. The developer forums cover USB hardware and software development and is not an end-user forum.

In 2014 they announced a new USB connection called "USB Type-C". It transfers data with 10 Gbit/s and charges devices with up to 100 Watts. The release is planned within 2014.