The demand for contemporary procurement systems posea challenge to contractors. Yet, no study has been conducted on Nigerian indigenous contractors (NICs’) involvement and performances in construction procurement systems. This research therefore sought to investigate NICs’ involvement and performances in construction procurement systems. Questionnaires were administered to indigenous contractors and the data obtained were analysed forreliability and significance tests, as well as descriptive statistics. Subsequently, collective case study was used to probe the questionnaire responses. Result reveals that: public and private clients involves NICs’ in traditional and non-traditional procurement system; public clients procure 75% of it projects through the tradititional systems, while private clients procure 78-100% of it projects through non-traditional systems; NICs’ performances record high rates of time overruns (traditional: 34-146%; non-traditional: 45-60%) and cost overruns (traditional: 35-47%; non-traditional:31-36%). The research recommends NICs’: apply project management techniques; employ competent personnel and embark on continuous training; invest in knowledge management and; clients and consultants adheres to project management procedures.