"Emotions" is a song written and produced by Mariah Carey, and David Cole and Robert Clivillés of the C+C Music Factory, and recorded for Carey's second album Emotions (1991). It was released as the album's first single in the third quarter of 1991 in the United States and in the fourth quarter elsewhere. This disco-influenced song has its protagonist going through a variety of emotions, from high to low, up to the point where she declares "you got me feeling emotions" and sings high notes.

Carey was sent to work with the C+C Music Factory and they composed the song "You're So Cold", which became the first choice for the album's first single. However, a second session with the production team had them feeling in a lighter mood when "Emotions" was created and finally decided upon as the lead single.

"Emotions" is disco-influenced pop song and it is written in the key of C major. Carey usually prefers to transpose the key to B♭ major when performing live (one example of this is on MTV Unplugged). Carey's vocal range spans more than four octaves on the track, from C₃ to E₇. The song tested and challenged Carey's vocal range and is her first song to require the execution of multiple whistle notes. It starts on a falsetto note followed by a belted note. This is one of the reasons why many singers who try to emulate her vocal technique may use an incorrect vocal technique. The sheet music of the song has a 8va marking on the last part of the song.

The single's music video, directed by Jeff Preiss, features Carey and friends with exotic animals experiencing emotions while partying and having fun around town in New York. The video was desaturated but still maintains various different color tints, which change from brown to red to blue and so forth.

David Cole and Robert Clivillés created the main remix of "Emotions" known as "Emotions" (12" club mix). Although Carey did not re-record her vocals for it, she added a new gospel-style intro before the song's dance portion. This new intro was used when she performed "Emotions" on MTV Unplugged in 1992, as well as at some later concerts. A music video was created using the 12" club mix, but only slight changes in editing differentiate it from the video for the original version.

"Emotions" was nominated for the 1992 Grammy Award for Best Female Pop Vocal Performance, losing to "Something to Talk About" by Bonnie Raitt. It won a BMI R&B Award, continuing Carey's unbroken streak of wins for this award.

"Emotions" became Carey's fifth consecutive number 1 hit on the U.S. Billboard Hot 100, giving her the distinction of being the first and to date only act to have their first five singles make number 1 on the Hot 100. (She had previously shared a record of four with The Jackson 5.) It reached number 1 in its seventh week and spent three weeks at the top, from October 6 to October 26, 1991. It replaced "Good Vibrations" by Marky Mark and the Funky Bunch featuring Loleatta Holloway, and was replaced by Karyn White's "Romantic". It remained in the top forty for twenty weeks and was one of four singles from Carey on the Hot 100's 1991 year-end charts, ranking 22. The song topped the Hot R&B/Hip-Hop Songs chart and became her second number 1 single on the Hot Dance Club Play chart. The RIAA certified it gold.

Outside the U.S., it was Carey's most successful single since "Vision of Love" (1990), the lead single from her debut album. It reached the top five in Canada and New Zealand, and became her first single to reach the United Kingdom top twenty since her debut. It was a modest hit in Australia, where it just missed the top ten, but its success in Europe was limited.

It was used for a 2009 Australian Idol advertisement.

On New Year's Eve, 2009, Carey sang Emotions on the first night of her 'Angels Advocate Tour'. It is the first time she has sang Emotions live in 10 years, since the Rainbow World Tour.

Worldwide CD single

1. "Emotions"
2. "Vanishing"

U.S. CD maxi-single

1. "Emotions" (12" club mix)
2. "Emotions" (12" instrumental)
3. "Emotions" (album version)
4. "There's Got to Be a Way" (12" mix)
5. "There's Got to Be a Way" (vocal dub mix)

European maxi-single #1

1. "Emotions"
2. "Vanishing"
3. "Vision of Love"

European maxi-single #2

1. "Emotions" (C&C club mix)
2. "Emotions" (C&C 12" club no 1 mix)
3. "Emotions" (C&C dub-dub mix)

1. "Emotions" (album version) - 4:11
2. "Emotions" (12" club mix) - 5:54
3. "Emotions" (12" instrumental) - 5:07
4. "Emotions" (12" acapella) - 2:29
5. "Emotions" (special motion edit) - 4:46
6. "Emotions" (special motion mix) - 5:17
7. "Emotions" (C+C radio mix) - 4:21
8. "Emotions" (C+C club mix) - 7:15
9. "Emotions" (C+C club no.1 mix) - 7:45
10. "Emotions" (C+C club mix edit) - 5:51
11. "Emotions" (C+C hardcore factory mix) - 8:16
12. "Emotions" (club mix) - 8:32

• List of Hot 100 number-one singles of 1991 (U.S.)