Acanthosaura crucigera (Thai: กิ้งก่าเขาหนามสั้น) is a species of lizard commonly known as the masked spiny lizard, Boulenger's pricklenape, or masked horned tree lizard. They are found in Myanmar, Thailand, Peninsular Malaysia, and Cambodia.

They have a distinct diamond-shaped black mark on the upper side of the neck and measure about 25 cm (9.8 in) in total, snout to tip of the tail.

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