Originally Written And Performed By Dolly Parton In 1974 Whitney Houston's Cover Is The Best Selling Single By A Woman Of All Time. It Was Released On November 3 1992. "I Will Always Love You" Was The Lead Single Of The Bodyguard The Original Soundtrack. Considered One Of The Most Beautiful Love Songs Of All Time It Peaked At Number #1 In Several Countries Including The United States United Kingdom And Japan And Remained On Billboard's Hot 100 For 14 Consecutive Weeks At #1 And Today Is Still One Of The Longest Charting Songs Notably Tied With "We Belong Together" By Mariah Carey Among Others Houston's Version Was Passed By Mariah Carey And Boyz II Men's Song "One Sweet Day" Which Stayed At #1 For 16 Consecutive Weeks.