The use of vegetable oils as an alternative fuel for diesel engines is accelerated by the energy crisis due to depletion of resources and increased environmental problems. A consistent supply of feedstock is being faced as a major challenge by the biodiesel production industry. In this article, different edible and non-edible feedstock sources for biodiesel production were compared based on their properties, availability, oil content, and, particularly, yield per hectare. Also, the greenhouse gas emissions from diesel and biodiesel during production and operation, and the possible emission reduction for pure biodiesel and biodiesel blend were compared. Further, the mandatory blending policy is also discussed to understand the potential of biodiesel requirement. The vegetable oil can be chosen based on non-edibility nature, higher yield, better property, perennial continuous yield for many years, such as from tree and direct use without esterification. This review is useful to refer the various properties and yields of biodiesel feed stocks.