编程马拉松（英语：hackathon，又译为骇客松），又称骇客日（hack day）、骇客节（hackfest）或编程节（codefest），是一个流传于黑客（hacker）当中的新词汇。编程马拉松是一种活动。在该活动当中，电脑进程员以及其他与软件发展相关的人员，如图形设计师、界面设计师与专案经理，相聚在一起，以紧密合作的形式去进行某项软件专案。编程马拉松的灵魂是合作地编写进程和应用。 编程马拉松的时长一般在几天到一周不等。编程马拉松不是编写些一次性作品那幺简单。编程马拉松的精髓在于：很多人，在一段特定的时间内，相聚在一起，以他们想要的方式，去做他们想做的事情——整个编程的过程几乎没有任何限制或者方向。

A hackathon (also known as a hack day, hackfest or codefest) is an event in which computer programmers and others involved in software development and hardware development, including graphic designers, interface designers and project managers, collaborate intensively on software projects. Occasionally, there is a hardware component as well. Hackathons typically last between a day and a week. Some hackathons are intended simply for educational or social purposes, although in many cases the goal is to create usable software. Hackathons tend to have a specific focus, which can include the programming language used, the operating system, an application, an API, or the subject and the demographic group of the programmers. In other cases, there is no restriction on the type of software being created.