This study investigated the Discrimination and Difficulty Indices of Senior Secondary Certificate Examination (SSCE) Multiple Choice Physics Questions from 2016–2018 in Rivers State. The study made use of ex-post facto research design and was guided by two research questions. Sample for the study comprised of 330 SSCE Multiple Choice Physics Questions of WAEC and NECO between 2014–2018, having a total of 550 multiple choice items. In the course of determining the psychometric properties of the tests, simple random sampling technique was used to compose a sample of 692 SS3 physics students from eight (8) secondary schools in five (5) Local Government Areas, out of a population of all the 42,865 Senior Secondary three (SS3) students in Public Secondary Schools in Rives State during 2018/2019 academic session. From this sample of 692 SS3 physics students, only 665 students, representing 96.1%, took part in all the tests. Instruments utilized for data collection in the study were past SSCE Multiple Choice Physics Question Papers of WAEC and NECO of 2016–2018 which were already validated by the two Examination Bodies. Data from the study were analyzed by the use of formulae for carrying out item analyses which were used to determine the Discrimination and Difficulty Indices of the tests. Findings from the study revealed that all the instruments in the years studied, had good Discrimination and Difficulty Indices, but WAEC SSCE Multiple Choice Physics Test Items had higher Discrimination Indices than NECO SSCE Multiple Choice Physics Items for the same years studied. Findings from the study also revealed that SSCE Multiple Choice Physics items of WAEC for the years 2016 – 2018 studied are more difficult than SSCE Multiple Choice Physics Test Items of NECO of the same years. Based on the findings, recommendations were made.