This paper investigated the influence of achievement motivation on Nigerian undergraduates' attitude towards examination. Descriptive survey of the correlational type was employed for the study. One thousand, five hundred and thirty-six (1,536) undergraduates in Nigeria were drawn using purposive and stratified sampling techniques. Four research questions were generated to guide the application of the study, while two null hypotheses were formulated and tested at 0.05 alpha level. "Achievement Motivation Scale" (AMS) and "Attitude Towards Examination Scale" (ATES) were the instruments used to collect relevant data. The findings revealed that majority of Nigerian undergraduates have a high level of achievement motivation. The findings also revealed that majority of Nigerian undergraduates have a positive attitude towards examination. There was a significant correlation between achievement motivation and attitude of Nigerian undergraduates towards examination. The findings also revealed that gender, age, level of study, university and family type had a significant positive influence on undergraduates' achievement motivation and attitude towards examination in Nigeria. It was therefore recommended, among others that counsellors and lecturers should be properly equipped with strategies needed to assist students in developing appropriate achievement motivation level so as to promote positive attitude towards examination.