<p>After the COVID-19 pandemic, the use of digital multimedia instructional package (DMIP) in teaching History became important to improve the dwindling academic achievement of students in this new era of global education reality of digitalizing instructional delivery. Yet, globally, many teachers in the developing world do not adopt such innovation, hence students’ achievement in History remained low. Therefore, this study tested the effect of DMIP on the academic achievement of students in History in Nigeria. Three null hypotheses were used and pretest-posttest quasi-experimental design was adopted. A total of 530 senior secondary one (SS1) students (195 males and 335 females) were selected using a multi-stage sampling procedure. History Achievement Test with KR₂₀ reliability figure of 0.88 was used for data collection. Analysis of Covariance was used to test the hypotheses at 0.05 level of significance. Findings showed a statistically significant difference in the mean achievement score of students in History based on instructional media used with a medium effect size (<i>F</i> _{(1, 525)} = 150.527, <i>p</i> &lt; .000, η_p² = 0.223). Ministry of education should prioritize the use of DMIP in teaching history by making them available to teachers in the schools.</p>