Itay Fainmesser (PhD in Business Economics, Harvard University) is an associate professor of economics at the Johns Hopkins University Carey Business School. He also has a courtesy faculty appointment in the economics department of the Johns Hopkins University School of Arts and Sciences.

Fainmesser studies how social networks and social media affect and are affected by market activities and market rules. His current work studies the pricing of network goods, the role of intermediaries in markets, influencer marketing, and user privacy in online platforms. His work has been published in top economics and management journals such as The Review of Economic Studies, Management Science, and The Journal of Economic Theory. 

Among the courses, he has taught are 鈥淓conomics for Decision Making鈥� and 鈥淐ompetitive Strategy.鈥�