WorleyParsons Limite ASX:WOR is a large Australian provider of professional services to the energy, resource, and complex process industries. It is often cited as being Australia's largest engineering firm and is also one of the world's largest engineering design firms. In 2007, Engineering News-Record ranked the company as 6th in a list of the top 200 international design firms, based on revenue for design services performed on projects outside the firm’s home country. If rankings were to take into account total revenue for design services performed in their home country and abroad, WorleyParsons was placed 11th.