The study aimed to delineate phonological processes across 3 ½ to 6 ½ years old typically developing Hindi speaking children. A total of 180 children participated in the study who were further divided into 30 in each of the six age groups i.e. 3 ½ to 4, 4 to 4 ½, 4 ½ to 5, 5 to 5 ½, 5 ½ to 6, and 6 to 6 ½ yrs. The inclusion criteria were normal oral mechanism, native speakers of Hindi and attending Hindi medium school. To assess phonological processes a test of Phonology in Hindi was developed and administered. The results indicated a total of 24 processes to be occurring in children speech. However, processes declined as the age increased and the mean percentage of occurrences were varying in each age groups for individual processes studied. These results were partially similar to other studies which were conducted in Indian languages.