Food waste continues to receive global attention by policymakers, academics and businesses as it undermines the sustainability of the global food systems, posing environmental and economic challenges as well as impacting food security. In Africa’s largest economy, Nigeria, a third of food produced eventually up as waste. This work evaluated the knowledge, attitude and practice towards food waste management amongst households in Karu Local Government Area, Nasarawa State by administering a structured questionnaire. The results show that 67.41% of the respondents have a good knowledge, 63.51%, have a good attitude, and good practice was displayed by 83.57%. Significant association was discovered of food waste management practices with knowledge and attitude, suggesting that both knowledge and attitude play a crucial role in shaping household food waste behaviors. However, the level of food waste management practices among the households is not the same as the level of knowledge and attitude they displayed, suggesting a gap between awareness and actual behavioral implementation. The overall findings imply that interventions aimed at improving food waste management should not only focus on increasing knowledge but also emphasize shaping positive attitudes and behavioral reinforcement strategies to drive sustainable change.