The term blue frog may refer to:

• Blue poison dart frog (Dentrobates tinctorius "azureus"), a frog in the family Dendrobatidae found in southern Suriname and adjacent far northern Brazil

• Australian green tree frog (Litoria caerulea), a frog in the family Hylidae native to Australia and New Guinea, actually green but originally called "blue frog" due to damaged specimens

Various characters:

• Rockit, a blue-colour tree frog in The Roly Mo Show

• Pierre, a blue-and-yellow frog in Sesame Street (Japan)

As Blue Frog, it may also refer to:

• Blue Frog, an anti-spamming service

• Blue Frog Bar and Grill, a Western-style cuisine restaurant chain company in China

• "The Little Blue Frog", a Miles Davis track added to Big Fun

• "I'm In Love With a Big Blue Frog", a Peter, Paul, & Mary song on Album 1700

• "Blue Frog Tavern", a solo adventure for role-playing game Tunnels & Trolls