This chapter explores the interactions between Sinitic and Philippine-based languages in the Philippine context. It focuses on the complex dynamics between the languages of the historically indigenous population and those of the (heritage and homeland) Chinese groups. Using oral and written data sampled from 12 linguistic varieties in three major Philippine cities across the archipelago, the chapter features the processes of Sinicization, Filipinization, and language crea-tion. It shows that languages that co-exist in the same linguistic ecology can actually affect each other differently, depending on the sociohistorical context in which such interactions take place. Overall, this descriptive overview chapter hopes to highlight the intricacies of the relationship between the Sinitic and Philippine-based languages and attempts to provide a holistic characterization of the Sino-Philippine and, consequently, broader Philippine linguistic landscape.