The influence of the polyembryonic mango rootstocks 'Rosa', 'Camphor', 'Ceniap', 'Peru' and the monoembryonic rootstocks 'Divine', 'Tetenene Manzana' and 'Currucai' on the fruit size and shape of 'Haden', 'Tommy Atkins', 'Edward' and 'Springfels' cultivars was studied. These rootstocks were selected by their medium to small growth habit. Results indicated that the rootstocks modified the fruit dimension, weight and shape, and these changes varied according to the scion/rootstock combination used. In general, the cultivars Edward and Springfels increased their fruit weight and size significantly. 'Haden' and 'Tommy Atkins' increased fruit weight and size also, but the fruit shape was modified, as compared to the fruits from the CENIAP old collection (> 35 years) that were considered true to type.