List of RPM number-one adult contemporary singles of 1978

In 1978, RPM magazine published a chart for top-performing singles in the easy listening or adult contemporary categories in Canada.

The first number-one in 1978 was "Sweet Music Man" by American country singer Kenny Rogers, continuing from the 1977 charts, and the last was "Time Passages" by British singer-songwriter Al Stewart.

Sixteen acts have their first number-one in the chart in 1978: Billy Joel, Randy Newman, Dan Hill, Johnny Mathis, Deniece Williams, Kansas, Donny Hathaway, John Travolta, Bonnie Tyler, Chuck Mangione, Michael Johnson, the Commodores, Kim Carnes, Chris Rea, Donna Summer, Little River Band and Al Stewart.

Four Canadian acts, Dan Hill, Gordon Lightfoot, Anne Murray and Burton Cummings had at least one number-one that year.

American country performer Dolly Parton had the longest number-one chart run in 1978, with "Heartbreaker", which stayed at number one for four weeks.

Olivia Newton-John had the most number-ones singles in the chart, with three
Dolly Parton spent four weeks at number one in the chart with " Heartbreaker "
Billy Joel ( pictured in 2009 ) spent three weeks at number one in the chart with " Just the Way You Are "
Andy Gibb had two number-one singles in the chart with " (Love Is) Thicker Than Water " and " Shadow Dancing "
Barbra Streisand spent two weeks at number one with " Songbird " and " You Don't Bring Me Flowers " (with Neil Diamond ).