There is an influential literature on trade-related technology diffusion. This article contributes to that literature by investigating whether north-south trade-related technology diffusion has a regional dimension. To do so, we build a weighted foreign research and development index at the industry level to account for international and interindustry technology spillovers. Using parallel analysis for nine developing countries, we find: (1) north-south trade-related technology diffusion is strong and significant and (2) north-south technology diffusion tends to have a regional dimension: developing countries in Asia, Latin America, and the Middle East tend to benefit, respectively, more from trade with Japan, North America, and Europe than from trade with other northern regions. (JEL F1, F15).