List of best-selling singles
15 million copies or more

Artist
Single
Released
Sales (in millions)
Source
Bing Crosby
"White Christmas"
1942
50
-
Elton John
"Candle in the Wind 1997" / "Something About the Way You Look Tonight"
1997
33
-
Mungo Jerry
"In the Summertime"
1970
30
-
Bing Crosby
"Silent Night"
1935
30
-
Bill Haley & His Comets
"Rock Around the Clock"
1954
25
-
Whitney Houston
"I Will Always Love You"
1992
20
-
Elvis Presley
"It's Now or Never"
1960
20
-
USA for Africa
"We Are the World"
1985
20
-
The Ink Spots
"If I Didn't Care"
1939
19
-
Baccara
"Yes Sir, I Can Boogie"
1977
18
-
Celine Dion
"My Heart Will Go On"
1997
18
-
Mariah Carey
"All I Want for Christmas Is You"
1994
16
-
Bryan Adams
"(Everything I Do) I Do It for You"
1991
15
-
John Travolta and Olivia Newton-John
"You're the One That I Want"
1978
15
-

Question: How many copies did Whitney Houston's best-selling single sell?
Answer: "I Will Always Love You" became the best-selling single by an artist with 20 million copies sold.