Red triangle

Red triangle may refer to:

Societal symbols

 * Bass Brewery's "iconic red triangle" trademark, England's first registered trademark.
 * Red triangle (badge), a Nazi concentration camp badge worn upright by prisoners of war, and worn inverted for political prisoners.
 * A symbol on the Brazilian state flag of Minas Gerais
 * Red triangle (Channel 4), British television content warning system symbol
 * Red Triangle (family planning), the symbol for family planning health and contraception services

Nature

 * Red Triangle (Pacific Ocean), a shark-infested Pacific Ocean region off the northern California coast
 * Red triangle slug, a species of land slug from Australia