Although alcohol is a leading cause of health and social harms in Canada, policies directed at alleviating the public health burden created by alcohol are rarely adopted and often reversed. This study analyses alcohol-related policy lobbying activity to better understand how lobbying might impact policy development in Canada. This was deemed not human subjects research. A cross-sectional analysis was conducted using data from the federal Canadian Registry of Lobbyists to characterize the frequency and nature of alcohol industry and public health lobbying activities between May 2022 and May 2023. In this period, there was substantially more lobbying activity by alcohol industry representatives compared to public health stakeholders. Over three-quarters of lobby groups represented alcohol industry organizations (n = 13) compared to public health organizations (n = 4), with industry recording a majority of registered lobbyists (81.3%), meetings reported (66.2%), and number of officials lobbied (71.2%). Alcohol industry organizations predominantly lobbied bureaucrats in policy making/governance roles (54.2% of industry meetings), while public health stakeholders mainly lobbied legislators (60.4% of public health meetings). The alcohol industry's dominance in federal lobbying activities may enable corporate influence over alcohol policy development and undermine public health approaches. The nature of lobbying in Canada has international implications for the regulation of a product that is an important commercial determinant of health, showing the potential role lobbying may play in weakening alcohol regulation.