Male calves are not economically attractive for most dairy farms in the current system and are therefore considered surplus in the dairy industry. The issue has gained growing attention in many countries, due to economic and animal welfare implications. It is known that livestock extensionists play a crucial role in facilitating change and promoting sustainable practices among the farming community. This study aimed to investigate the knowledge and attitudes of Brazilian dairy extensionist regarding three potential solutions to the issue of male dairy calves: the use of sexed semen, rearing for beef, and culling at birth. Livestock extensionists from different regions of Brazil (