红河战争（英语：Red River War）是由美国联邦军队于1874年发动的军事行动，目的是把科曼切、基奥瓦、南夏延和阿拉帕霍族北美印第安土着部落从美国南部平原驱赶出去，强迫他们搬迁到位于俄克拉何马州境内的印第安保留地。战争首先由饱受联邦压迫的南部平原印第安部落挑起，最后以印第安人战败告终。战争仅持续了数个月，几支联邦军列纵横交错来往于德克萨斯州的狭长地带，努力寻找、袭击、俘获流动性极高的印第安部落。大部分的交战都是小规模冲突，双方均未遭受很大伤亡。在1874年的最后几个月，随着有足够力量和物资在战场上继续坚持下去的印第安部落越来越少，战争逐渐接近尾声。尽管直到1875年中期，最后一支规模显着的部落组织才投降，这次行动不同于以往的任何联邦军队企图平定西部边疆的行动：这场战争标志着印第安部落在美国南部平原自由徜徉的生活的终结，翻开了德克萨斯州历史上新的一页篇章。

The Red River War was a military campaign launched by the United States Army in 1874 to remove the Comanche, Kiowa, Southern Cheyenne, and Arapaho Native American tribes from the Southern Plains and forcibly relocate them to reservations in Indian Territory. Lasting only a few months, the war saw several army columns crisscross the Texas Panhandle in an effort to locate, harass and capture highly mobile Indian bands. Most of the engagements were small skirmishes in which neither side suffered many casualties. The war wound down over the last few months of 1874 as fewer and fewer Indian bands had the strength and supplies to remain in the field. Though the last significantly sized group did not surrender until mid-1875, the war marked the end of free roaming Indian populations on the Southern Plains.