In traditional economic theories, people are viewed as having perfect knowledge, which is a critique of behavioural finance especially on grounds of cognitive biases. The research aims at determining gender-related cognitive biases in relation to investment among people of Manipur. The research establishes that there are quite noticeable gender-related biases like overconfidence, loss aversion, and anchoring. The research shall adopt a quantitative research design with the target population of 75 participants and the t-tests used in the analysis of the data. According to the research, it was evident that there is evidence of gender differences in overconfidence, loss aversion, and anchoring biases. However, herd behaviour, confirmation and availability do not show significant evidence of gender differences. The implications of these results are for the delivery of effective financial literacy and education.