The purpose of this article is to identify practical strategies that new product development (NPD) managers can undertake to increase the likelihood of serendipity within the NPD process by focusing on overcoming the barriers presented by cognitive bias. We adopt an alternative methodological approach based on analogical reasoning to develop a series of propositions that explain the relationship between cognitive biases and serendipity. We present a process model of how serendipity unfolds within NPD. We provide a detailed analysis of cognitive bias within NPD, and identify those categories of biases that are most likely to hinder the occurrence and realization of serendipity in NPD. Finally, we propose a strategy of debiasing NPD activities to enable serendipity and thereby improve new product performance. This article concludes with a research agenda and discusses implications for firms.