Maize production caters for the increased demand of food and feeds of both animal and human consumption. Shortages in maize production have caused increased hunger, increased prices of maize related products such as flour. Increased supply can only be achieved by reduction postharvest losses and improvement in productivity of land through fertilizers application. As well as creating employment to the farmers to boost their incomes. Maize productivity is determined by farm and farmer characteristics input characteristics. The study focused on the factors influencing maize out growers‟ productivity in Uganda. These farmers have failed to adopt modern methods of farming to improve on production. Maize production still suffers the problems of low prices during peak harvest periods, price fluctuations and post-harvest losses. However, previous studies focused on high price fluctuation in maize but they have not looked at the factors limiting productivity. Panel data from UBOS survey conducted from 2013/2014 and 2015/16(two waves) was used as our secondary source of data to analyze the factors affecting maize out growers‟ productivity in Uganda. Quantitative data were analyzed using Stata15. The results revealed that factors such family labor, sex of household head, fertilizers, area of maize cultivated, household deaths, and per capital income are significant in determining quantity of maize harvested. Per capital income Affects quantity harvested by 200grams,gender affects quantity by 348kgs,deathof house hold member affects quantity harvested by 878kgs,person days family members worked on the farm affects quantity harvested by 1.18kgs, that is each day family member spends on the farm contributes 1.18kgs of maize harvested. Therefore it can be concluded that maize producers in the study area had small land holding that was devoted to maize production. Average land owned was 5.5 acres and area devoted for cultivation was 1.7 acres only 0.52 acres was devoted for maize cultivation. Since on average most families harvest 600kgs but only sell 70kg and give out 28 then this make the farming at subsistence in nature. The study would recommend the government to come up with better land policies to discourage land fragmentations and promote commercial farming.