Koajay Company Limited is a Ghanaian firm involved in various projects, particularly in waste management and infrastructure development. Notable engagements include:

• Achimota Bus Terminal Management: Koajay has been responsible for managing the Achimota Bus Terminal in Accra. In 2010, the company emphasized its commitment to maintaining the terminal’s standards and keeping it free from unauthorized hawkers.
• Waste Treatment Initiatives: In collaboration with MDF Training and Consultancy B.V. and several municipal assemblies, Koajay Group Limited has been involved in projects aimed at treating waste to produce biogas and compost. These initiatives focus on converting waste from sources like the Nsawam prison and various municipalities into valuable products, including the construction and operation of public toilets.