The Online News Association (ONA), founded in 1999, is a 501(c)(3) non-profit organization made up of more 2,000 members. It is the world’s largest association of digital journalists.

The majority of ONA members are professional online journalists. The association defines "professional members" as those "whose principal livelihood involves gathering or producing news for digital presentation." These include news writers, producers, programmers, bloggers, designers, editors, photographers and others who produce news for the Internet or other digital delivery systems. Other members include journalism educators, journalism students, business development, marketing and communications professionals in the media and those interested in the field of online journalism.