先驱者计划（英语：Pioneer program）是美国的一系列无人行星探测任务。整个计划分为数个任务，而最著名的是先驱者10号和11号，它们探测外层行星并飞出了太阳系。两个探测器都携带了刻画着男女和地球位置的金版，期待地外生命有朝一日发现并解读它。

计划的命名归功于斯蒂芬·A·萨利加（Stephen A. Saliga），当时属于赖特帕特森空军基地的空军定位小组成员。在一场发布会上，计划的首个航天器被提名为“带红外扫描设备的月球轨道器”，萨利加认为名字太长，不能突出任务的主题。他建议使用“先驱”作为首个航天器的名字，因为“军方已经发射了探索者号卫星，媒体将军方成为‘太空先驱’”，采用了这个名字的空军方面决定来一次“质的飞跃”，使自己真正成为“太空先驱”。

The Pioneer program is a series of United States unmanned space missions that were designed for planetary exploration. There were a number of such missions in the program, but the most notable were Pioneer 10 and Pioneer 11, which explored the outer planets and left the solar system. Pioneer 10 and Pioneer 11 carry a golden plaque, depicting a man and a woman and information about the origin and the creators of the probes, should any extraterrestrials find them someday.