ABSTRACT Construction industry has complexity in it nature because it contains large number of parties such as clients, consultants and contractors. The factors that influence construction management practice differ from country to country, due to prevailing conditions. The objective of this project is to identify factors that influence construction management practice in Nigeria construction industry and elicit perceptions/ranking of the severity using relative importance index of the various factors. A comprehensive literature review was conducted to generate a set of factors believed to influence construction management practice in Nigeria. A questionnaire survey was conducted and fifty-seven (57) factors were identified, grouped into nine (9) categories, evaluated and ranked from the construction actors perspectives. 108 questionnaires was produced and distributed to the key construction actors as follows: 45 to contractors, 33 to consultants and 30 to clients. Out of these questionnaires distributed, 92 were received (85%) as follows: 40(88.9%) from contractors, 28(84.8%) from consultants and 24(80%) from clients as respondents. They nine categories considered in this research work are as follows: quality management during design, quality management during construction, construction management techniques used in practice, economic policy, management style, socio-political consideration, motivation of staff, obstacles facing construction management practice and benefits of applying construction management tools in practice.