The most widely available low-cost feed for ruminants in major developing countries is usually native pastures but there is the limitation in their availability as they kept reducing in quantities and qualities all year round while the high cost associated with conventional cereals and legumes made them to be discouraged. The aim of this article is to investigate the potential of defatted Delonix regia seed cake as ruminant animals alternative feed. The properties of D. regia seeds were determined using the method (Idowu et al., 2012). The oil available in the seeds was extracted using cold maceration method. The proximate composition of the defatted seed cake was determined using (AOAC, 2016) methods while its elemental mineral component was analyzed using Atomic Absorption Spectrophotometer (AAS) following (AOAC, 2016) methods. Its anti-nutrient content was determined following the method of (Akaninwor and Okechukwu, 2004). The average for the length, width, and thickness of D. regia seeds obtained in this study are 17mm, 5mm and 3.8mm respectively. The proximate composition showed that the seed cake has high protein content with the value of 39.57% while the concentration for the mineral composition goes in the following order: (Fe>Zn>K>Mg>Mn>Cu>Co>Na>Ca). The anti-nutrient content showed that oxalate (0.85mg/100g) has the highest value while phytate (0.34mg/100g) has the least value. This study has demonstrated that defatted Delonix regia seed cake usually known to be waste could be useful in compounding animal feed.