Abstract This paper examines the intonation of English statements and questions produced by Vietnamese speakers at two differing levels of proficiency. The goal of the study is three-fold: (1) analysing the final tunes and the prosodic structure observed in information-seeking questions, namely Yes-No question, Or-question, Tag-question and Wh-question, (2) evaluating which characteristics of the L2 English intonation can be clearly derived from the observation of the data, and (3) whether the L2 English intonation patterns are transferred from Vietnamese. A data set of 25 sentences that included 5 statements and 20 information-seeking questions were constructed. Ten native Australian English speakers as a control group and 20 Southern Viet...