Speak or SPEAK may refer to:
- Speech, the vocal form of human communication
- Speak (Hungarian rapper) (born 1976), known for his song and music video "Stop the War"
- Speak! (born 1987), American rapper and songwriter
- Geoffrey Lowrey Speak (1924–2000), British teacher in Hong Kong
- George Speak, English footballer
-
Speak (Anderson novel), a 1999 novel by Laurie Halse Anderson
- Speak (film), the film based on Anderson's book
- Speak (Hall novel), a novel by Louisa Hall
- Speak (band), a synthpop band from Austin, Texas
- "Speak" (Bachelor Girl song), a 2018 single by Australian pop band Bachelor Girl
- "Speak" (Godsmack song), a 2006 song by the band Godsmack
- Speak (Jimmy Needham album), 2006
- Speak (Lindsay Lohan album), the debut album by the actress Lindsay Lohan
- Speak (Londonbeat album), the debut album by the British-American dance band Londonbeat, 1988
- "Speak" (Nickel Creek song), a single by progressive bluegrass band Nickel Creek
- Speak (I and Thou album), 2012
- Speak (No-Man album), a compilation album by No-Man
- Speak (The Roches album), 1989
- Speak (Warren Dean Flandez album), 2018
- Speak!, a weekday sports talk show formerly called Speak for Yourself
- Speak!!!, an American rapper and songwriter
- "Speak", a song by Sevendust from Sevendust
- "Speak", a song by Swans from Swans
- SPEAK campaign, an animal rights campaign in Oxford
- SPEAK network, a Christian student campaigning network
- Speak (talk show), American sports talk show
- SPEAK (test), the Speaking Proficiency English Assessment Kit from the Educational Testing Service
- Speak (The Tick), the pet of comic superhero The Tick
- Speak (Unix), a Unix utility
- Speak (imprint), young adult division of the publishing company the Penguin Group
- Wii Speak, a microphone accessory for Nintendo's Wii video game console
- Speech (disambiguation)
- Spic (disambiguation)
