Deltina Hay (born 1960) is an American author, publisher, web developer and social media expert.
She is the author of numerous inbound marketing books as well as a lecturer on social media, Web 2.0, the mobile web, search engine optimization and other inbound marketing tactics.
She is a contributor to numerous online publications including Technorati, SocialMedia.biz, and Six Revisions.
She is a professor at Drury University where she facilitates the online, graduate-level Social Media Certificate Program and also teaches courses through Udemy, Experts-Exchange, and WizIQ.
She serves as a board member for the Independent Book Publishers Association where she also contributes to their newsletter and is an invited board member of the Internet Marketing Standards Board.
She is considered a pioneer of Web 2.0 and is most notable for her book A Survival Guide to Social Media and Web 2.0 Optimization which has been adopted by numerous journalism and public relations departments and was noted as one of the top 100 social media books of all time.
The second edition, retitled The Social Media Survival Guide is used as a social media text in colleges and universities worldwide including Minnesota State University, Ferris State University, and Georgia Southern University.