The purpose of this study was to determine the lexico-morphosemantic and structural variations and changes of Mandaya courtship and marriage rituals in the past and the present time. It sought the reasons for the variations and changes of the rituals of the Mandaya people on this phenomenon against their culture, ethnic identity, and hopes and aspirations in preserving their culture. The study employed an ethnographic qualitative research design with 25 participants involved in an in-depth interview and focus group discussion. The study revealed variations and changes in the lexico-morphosemantics and structures of the courtship and marriage rituals then and now. The lexico-morphosemantic variations and changes were evidenced by affixation, reduplication, deletion, and loan words. The structure of marriage rituals evolved from three major segments to eight segments in the present time. The courtship rituals were not practiced anymore at present. There were three major themes that emerged on the reasons and variations of the rituals, namely language stance, exposure to other languages and religious denominations, and contemporary social indicators. The variations and changes were attributed to religion, migration, intermarriage, and social media influence.