Abstract: To study the effect of pollen source on the productivity, maturity and fruit quality of 'Hayyani' date palm, one local and three commercial male varieties were used during 2002. Effect of pollen source on 'Hayyani' fruit-set and yield was statistically not significant, however, trees pollinated with 'Mejhool' pollen recorded the highest fruit-set and yield. The largest fruit weight, length and diameter were obtained when trees pollinated with 'Barakah' male. In addition, pollen source had no or little effects on 'Hayyani' fruit maturity, however, fruits of trees pollinated with 'Jarvis' male matured earlier while in trees pollinated with 'Barakah' showed delayed maturity. Moreover, 'Hayyani' trees pollinated with 'Barakah' pollen gave the highest fruit flesh %.