Parents' involvement is highly needed for ensuring holistic development of their words; however parents can only assist the child when they themselves have adequate knowledge, required skills, and proper awareness regarding various aspects of children's growth and development. To have adequate communication skill among parents, ensuring better language and communication in their words is one of the most significant aspects. Hence, the present study seeks to examine the impact of training programme on developing functional Sign language among parents of students with deafness. Pre-test-post-test experimental design was employed for the study. Samples were selected through convenient sampling. The collected data were analyzed using t-test. Results show statistically significant difference between pre and post test scores of functional Sign language of parents of students with deafness post intervention. However, no significant difference was found out between pre and post test scores of functional Sign language of parents of students with deafness after training programme with reference to their educational status, gender, age, and locality. The findings are presented and discussed as to justify the need for training parents in functional Sign language to develop their communicative skills properly which in turn can ensure better communicative and other allied skills in their words.