Walnut Venture Associates, also known as Walnut Ventures, is a Massachusetts-based venture capital firm with a focus on Boston-area technology companies which specialize in business-to-business products as well as business-to-consumer products. It generally invests between $250,000 to $1 million in its portfolio companies. Industries in which it invests include biotechnology, software, retail, and media. It has made 39 investments with 15 companies in its portfolio as of 2019. It has also had 19 exits.