It is undeniable that oral communication proficiency is one of the key targets any Vietnamese ESL learners wish to achieve. However, a big number of foreigners have commented “many Vietnamese speakers can speaking English, but only a few have intelligible English pronunciation that they can be understood easily in direct communication with foreigners” (Ha, 2005, Common Pronunciation Problems of Vietnamese Learners of English, p.1) As a matter of fact, Vietnamese learners of ESL encounter considerable pronunciation difficulties concerned with their own language. Like other languages, Vietnamese sound system has several phonetic features making Vietnamese people find it hard to pronounce some English sounds like native speakers. One of the outstanding problems faced by Vietnamese ESL learners lies in the pronunciation of single English final consonants. In an attempt to gain insights into the problem in English single final consonant pronunciation of the first year students at Nguyen Trai University, the researcher has conducted this study in order to identify some common errors in their pronouncing single final consonants. Once having been completed, this study would give decent benefits. On the first place, the research can draw out some typical pronunciation mistakes made by NTU first year student. Consequently, it can helpfully contribute to the understanding of the students’ difficulties arising while learning to speak English with appropriate pronunciation.