Sonic the Hedgehog is a video game series and media franchise created by Sega.

Sonic the Hedgehog may also refer to:

• Sonic the Hedgehog (character), the title character and main protagonist of the franchise

• Sonic the Hedgehog (1991 video game), a 1991 platform video game for the Sega Genesis (Mega Drive)
• Sonic the Hedgehog (8-bit video game), a 1991 platform video game for the Sega Master System and Game Gear
• Sonic the Hedgehog (2006 video game), a 2006 platform video game developed by Sonic Team for the Xbox 360 and PlayStation 3
• Sonic the Hedgehog, a 2008 educational video game for the LeapFrog Didj

• Sonic the Hedgehog (Archie Comics), comic book series published in the United States by Archie Comics
• Sonic the Hedgehog (IDW Publishing), comic book series published in the United States by IDW Publishing

• Sonic the Hedgehog (TV series), a 1993 Italian-American animated television series
• Sonic the Hedgehog (OVA), a 1996 Japanese original video animation series
• Sonic the Hedgehog (film series), an action-adventure film series
  • Sonic the Hedgehog (film), a 2020 action-adventure film, the first in the series
    • Sonic the Hedgehog (soundtrack), the soundtrack to the 2020 film

• All pages with titles beginning with Sonic the Hedgehog
• All pages with titles containing Sonic the Hedgehog
• Sonic hedgehog, one of three proteins in a mammalian signaling pathway
• Sonic (disambiguation)
• Sonic the Hedgehog 2 (disambiguation)