Five meta-analyses previously have been published on the topic of new product development involving the concept of new product development speed. Three of these studies have investigated antecedents to new product development success, of which just one was new product development speed. The other two studies used new product development speed as the dependent variable, and analyzed antecedents to achieving speed. This article extends previous empirical generalizations in this domain by using a meta-analytic methodology to understand the link between new product development speed and new product success at a more granular level. Specifically, it considers the relationship with different dimensions of success as measured overall or compositely, operationally (i.e., the process measures of decreasing development costs and proficiently managing market entry timing and the product measures of technical product performance and product competitive advantage), and relative to external success outcomes (i.e., customer based and financial success). While the results indicate that, in general, new product development speed is associated with improving success outcomes, those relationships may diminish or even disappear depending upon a number of methodological design decisions and research contexts. A subsequent meta-analysis of the antecedents of development speed provides a more holistic picture of development speed. These results are broadly consistent with those produced by another recent meta-analytic investigation of the issue. Together, these findings have important implications for academics pursuing further research in this domain, as well as for managers considering implementing a program to increase new product development speed.