Kaki Ae is a non-Austronesian language spoken by about 300 people on the south coast of Papua New Guinea, at best distantly related to any other language in that area. A brief grammar sketch of the language is presented, including discussion of the phonology, sentences, phrases, words, and morpheme categories. Kaki Ae phonemics include 11 consonants and 10 vowels; stress is always penultimate. Sentences can be simple, complex, or compound, and three types of phrases are described: noun, adverb, and intensifier. All verbs take subject agreement suffixes (SAS) that agree with the subject in person and number; the third plural SAS can be used in place of the third singular with third singular subjects, but not the reverse. SAS and object agreement suffixes (OAS) are discussed regarding morpheme categories, and the counting system is based on "two" and "five." Appendixes include a Kaki Ae to English lexicon, English to Kaki Ae word finder list, and seven short test examples. (Contains five references.) (NAV)