铁撬（英语：Crowbar）又名铁笔（英语：Pry bar）、撬棍（英语：Jimmy bar）、起钉器（英语：Wrecking bar）或者鹅颈棍（英语：Gooseneck），是一种以金属棍为主体的工具，主要特征是其中一边为弯曲（弯曲角度可达90 °）和扁平化削尖的末端，以切入到较狭窄的角度，让用户可以撬开对象；通常中间有一条小小而且很深的凹槽或裂缝或对分成两端，并且以杠杆原理以去除钉子。也有将这个工具和铁锤结合在一起，把铁锤的另一头做成铁撬，方便木工使用。在英国、爱尔兰共和国和澳大利亚，“铁撬”可能偶尔会随便地用来形容这个工具，但更常用于那些较大的直线型工具（参见开钻棍）。而“Jimmy bar”、“Jimmy”或“Jemmy”最经常提到的是盗贼在爆窃时使用的工具。

A crowbar, wrecking bar, pry bar, or prybar, pinch-bar or sometimes a prise bar, prisebar, and more informally a jimmy, jimmy bar, jemmy or PikiPiki or gooseneck is a tool consisting of a metal bar with a single curved end and flattened points, often with a small fissure on one or both ends for removing nails. In Britain, Ireland, New Zealand and Australia, due to the influence of American media "crowbar" may occasionally be used loosely for this tool, but it is still mainly used to mean a larger straighter tool, its original English meaning (see digging bar). The term jemmy or jimmy most often refers to the tool when used for burglary.