Electronic Procurement (e-procurement) via a series of complex bids or competitive tendering processes, involving compliance with terms, requirements and conditions and purchasing of goods, services, or works from external suppliers, necessitates a systemic approach streamlining every step and keeping track of itemized technical specifications and procedures. Additionally, this systematic approach involves the electronic processing of data while harnessing the power of Artificial Intelligence (AI) in the form of smart computer algorithms to efficiently solve issues related to the processing of large amounts of procurement data. This paper, which provides a systematic literature review on the use of AI in e-procurement, aims at synthesizing, analyzing, and discussing how AI has been used up till now in different e-procurement processes, like bidding and negotiation, and the extent to which it helped in automating the procedure(s).