The least understood aspect of Palenquero phonology is its intonational system. This is a serious gap, as it is precisely in the realm of prosody that the most striking phonological differences between Palenquero and (Caribbean) Spanish are apparent. Although several authors have speculated that African influence may be at the source of Palenquero’s peculiar intonation, to date published research offers no detailed information about the intonation of the creole. The goal of this study is to remedy this situation. Several specific intonational features are identified where conservative (or older-generation) Palenquero differs from (Caribbean) Spanish. One of these features is a strong tendency to use invariant word-level contours, with a H tone on the stressed syllable and L tones on unstressed syllables, in all sentential contexts, including prenuclear positions. A second identified feature is the use of a sustained phrase-final high or mid level contour in declaratives accented on the final syllable, and a long fall in declaratives accented on the penult. The final section addresses the issue of the possible origin of these intonational features. Similarities with Equatorial Guinea Spanish are pointed out and it is concluded that, at some point in the history of Palenquero, the Spanish prosodic system was interpreted as involving lexical tone, in conformity with claims in the literature regarding several Atlantic creoles.