Aquamarine may refer to:

• Aquamarine (color), a shade between green and blue
• Aquamarine (gemstone), a type of pale-blue to light-green beryl

Aquamarine may also refer to:

• Aquamarine (novel), by Alice Hoffman, 2001
  • Aquamarine (film), by Elizabeth Allen, 2006
• Aquamarine (album), by Ash Walker, 2019
• "Aquamarine" (song), by Addison Rae, 2024
• "Aquamarine" (Drugstore song), 2011
• "Aqua Marine" (song), by Santana, 1979
• Aquamarine (video game), by Moebial Studios, 2022
• Aquamarine, a character on the Cartoon Network show Steven Universe
• Aquamarine "Aqua" Hoshino, the male protagonist in manga and anime series Oshi no Ko

• Aquamarine (window decorator), a software application
• USS Aquamarine (PYc-7), a patrol vessel of the United States Navy, named for the stone
• Aqua Marine, a private housing estate in Cheung Sha Wan, Hong Kong
• One of the former names of the motor vessel Ocean Star Pacific

• Aquamarine Power, a wave energy company that developed the Oyster wave energy converter
• Aquamarine Fukushima, an aquarium in Fukushima
• Aquamarina, a fungal genus
• Aquimarina, a bacterial genus