Monkey orange is a common name for several trees that produce fruits that are superficially (but not taxonomically) similar to orange (citrus).

• Strychnos spinosa (also known as green monkey orange, Natal orange, spiny monkey orange)^[1]
• Strychnos madagascariensis (also known as black monkey orange)^[1]
• Strychnos cocculoides (also known as corky-bark monkey orange, Ntonga)^[1]
• Strychnos pungens (spiny-leaf monkey orange)^[1]
• Maclura pomifera (also known as Osage orange)^[2]