The present study aimed to train Traditional Birth Attendants (TBAs) in a parenting program called Learning through Play (LTP) to improve their Knowledge, Attitude, and Practices regarding child development after completion of training, for them to be better able to support parents during their routine practice. Quasi experimental design was used. A total of 330 TBAs meeting study eligibility criteria were included and data was collected in a group setting. LTP training was comprised of weekly sessions delivered over 1 month. LTP includes knowledge about child development for children from 0 to 3 years. The Knowledge, Attitude, and Practices (KAP) questionnaire was used to measure change. Statistical analysis was done through Paired Sample "T"-test. There was a significant difference between pre-post scores "t" = -29.36 (p < 0.05). Capacity building of TBAs in LTP program and integrating LTP into existing health care systems may contribute to reducing the child development gaps in Pakistan.