A study of insect pests incidence was made on Ultra high density plantation of mango having four (Ratna, Sonpari, Amrapali and Totapuri) different varieties which were planted at 2.5x2.5m at Soil & Water Management Research Station, Navsari Agricultural University, Navsari, Gujarat. Mango variety Ratna was found more susceptible towards Hopper, Thrips and Mite, while mango variety Amrapali and Sonpari was found mediocre towards these pests. Mango variety Totapuri had a minimum incidence of these pests and found more resistance towards Hopper, Thrips and Mite of mango. Hopper had a highly significant positive correlation with maximum temperature and sunshine, while the significant positive correlation with evaporation rate. Thrips showed a highly significant positive correlation with sunshine and a highly significant negative correlation with evening relative humidity. Thrips also showed a significant negative correlation with minimum temperature. Incidence of mite was highly significantly correlated with evaporation rate and sunshine, while the negative correlation with morning relative humidity and maximum temperature.