Jason Harper Shellen (born August 30, 1973) is an American internet entrepreneur who was the founding product manager of Google Reader and helped create and launch Brizzly.

[4] Shellen joined Google in 2003 when the company acquired Pyra Labs, which developed the Blogger blogging platform.

[1] In 2008, Shellen created Thing Labs which was acquired by AOL in 2010 to bolster their AIM Messaging division.

In October 2014 he was named as one of the investors in the Internet startup Delighted, which collects and analyzes customer feedback for businesses.

[6] Shellen was the head of product platform efforts at Slack in 2016, leaving the company in December that same year.