List of number-one country singles of 2018 (Canada)

Canada Country is a chart published weekly by Billboard magazine.

This 50-position chart lists the most popular country music songs, calculated weekly by airplay on 46 country music stations across the country as monitored by Nielsen BDS. Songs are ranked by total plays. As with most other Billboard charts, the Canada Country chart features a rule for when a song enters recurrent rotation. A song is declared recurrent if it has been on the chart longer than 30 weeks and is lower than number 20 in rank.

These are the Canadian number-one country singles of 2018, per the BDS Canada Country Airplay chart.

Note that Billboard published charts with an issue date approximately 7–10 days in advance through the chart dated January 3, 2018. The magazine shifted its chart publication schedule to better align with release dates, resulting in an extra "week" published on January 6, 2018.