This paper examines prosodic realizations of focus in Korean, especially a multi-word NP focus when varying with three factors: the number of arguments in the NP (e.g., one to four), the location of NP within a sentence, and the syntactic complexity of the sentence. Prosodic phrasing and intonation of 123 target sentences read by 4 speakers were analyzed following the revised model of Korean intonation (Jun 2006, 2007). Results show that, unlike VP focus in Korean, the last argument in an NP becomes the most prominent and initiates an Intermediate phrase. The data also show that there are two types of Intermediate phrase (prominence-marking and syntactic boundary-marking). The paper discusses the effect of focus on prosodic phrasing including the phrasing before and after focus, and proposes the representation of the dephrased string in the prosodic structure of Korean.