Darlene Nichols, also known by the names Kamook, Ka-Mook, Kamook Nichols and Ka-Mook Nichols, is the name of a former AIM member and Native American protester. She is best known for her role in the American Indian Movement for organizing (and participating in) The Longest Walk, and for serving as a key material witness in the trials of Arlo Looking Cloud, Richard Marshall, and John Graham that ultimately led to the conviction of two AIM members in the murders of Anna Mae Aquash.