A field experiments was carried out in the rainy season of 2019 in two different locations of Benue states of Nigeria. The experiment was carried out in Joseph Sarwuan Tarka University Makurdi. The aim of the experiment is to investigate effects of legume-inter crop and spacing on the performance of maize. Two different legumes were; groundnut, cowpea and control with spacing of (15, 20 and 25cm) were used. The treatments were laid in a randomized complete block design with three replications. During the research growth characters like plant height, number of leaves, leaf area, stem girth and number of prop roots per plants were measured. Other character like number of cobs, cob length, cob girth, cob weight, Number of seeds per cob, number of grain rows per cob, 100 gains weight, threshing percentage and grain yield were also recorded. The results of the investigation revealed that maize generally responded to both maize/legume intercrop and spacing. All the parameters studies have significantly (P≤0.05) responded to the intercrop of groundnut maize at the 15cm intra row spacing was observed to perform higher in both growth character and grain yield. Based on the result obtained it can be suggested that the inter crop of maize/ground nut at the spacing of 15cm will lead to optimum yield.