Spiny spider or spined spider is a common name for several species of spiders that exhibit spine-like projections on their body. It usually refers to:
Austracantha minax, the Australian jewel spider or Christmas spider Gasteracantha, the spiny orb-weavers
It may also refer to: Micrathena Micrathena gracilis, the spined micrathena Poecilopachys Poecilopachys australasia, the two-spined spider Thelacantha
See also Maja squinado, the spiny spider crab Libinia emarginata, the nine-spined spider crab