The objective of this study is to identify the impact of enhanced training for marketing and sales personnel, in order to improve marketing performance for telecommunications companies in Jordan, including the major Jordanian telecommunication companies, namely Jordan Mobile Telephone Services (JMTSZain), Jordan Telecom Group (JTG Orange) and Umniah. The sample consists of 400 respondents from the three companies, working either in sales or marketing, who have received training. The study concludes that there is presently no support or commitment from top management for improving the current training methods for marketing or sales personnel, diversification of training programs for business marketing and sales, adoption of modern technology for training purposes, or administrative and supervisory services provided for business marketing and sales in order to improve the marketing performance of telecommunications companies in Jordan. Therefore, this study lays emphasis on the importance of both increasing and improving training opportunities for personnel in these organizations, and recommends increased spending on sales and marketing training, in order to improve efficiency and diversify training opportunities for their employees, this since this would have a direct impact in improving current marketing performance.