The study was conducted to study the impact of Bauchi State Agricultural Development Programme (BSADP) on the livelihood of Maize Farmers in Western Agricultural Zone of Bauchi State, Nigeria: 2009 – 2015.The objectives of the study were to: describe the socio-economic characteristics of respondents, determine type of technology received/adopted by respondents and examine the impact(s) of maize technology adopted by the respondents over the years. A multi-stage sampling technique was used to collect primary data with the aid of a structured questionnaire. Results obtained showed that 63.9% of respondents in the study area are in their prime stage of production and majority (79.1%) of the respondents had one form of western education. It also revealed that 65.8% of the respondents receive their major extension services from BSADP. Impact was made on farmers at various significant levels of 0.05, 0.01 and 0.000. Highest impacts were on house type, means of transport type, communication means type, herbicide use and ownership of knapsack at a significant level of P<0.001. The study concluded that BSADP had made Impact in the livelihood of maize farmers in western agricultural zone of Bauchi State. Extension providers should encourage farmers to keep records since most of them can read and write, this will not only help the farmers but extension system as a whole. BSADP through its EAs; should uphold its good work in the study area and build cordial relationship with the farmers. Government and donor agencies should keep on supporting Bauchi State Agricultural Development Programme (BSADP).