This study looks into tone patterns in address form of truncated personal names in North Kyungsang Korean (NK). Address forms of personal names usually take three patterns. One form is made of a family name followed by a given name as in Kim Myung Ja. The second form is made up of a given name followed by vocative particle –a/-ya as in Myung Ja-Ya. The third is a truncated formfromthe final syllable of a given name followed by a vocative particle as in Ja-Ya. As for the tones in NK, it is found here that the tone of a given name address formis always predictable. Regardless of the tone of a family name, the tone of a given name is repeated in a given name address formwhere a vocative particle is assumed to be L. But, things are a little different when it comes to truncated address form. The syllable type of truncated names decides the tone of address form[HH] and [HL] such that the former is for a heavy syllable and the latter for a light syllables.An exceptional [HL] tone in heavy syllables is found in truncated nameswith a nasal coda, evincing the influence of segments on tones. Another kind of exception for the [HL] tone in heavy syllableswith a nasal coda is related with the availability of truncated names as separate common nouns, where the attested tone is [HH] instead of [HL].