Background/Objectives: This research aims to identify any relationships between body dissatisfaction and body size among males in their twenties.
 Methods: Participants were recruited for a year from August 2015 to July 2016. Participants were 100 males, of which 50 were white American males and 50 were Korean males in North Carolina, United States of America, who are aged between 20 and 29 years old. TC2-19 3D body scanner was used to measure the participant’s body size. A descriptive analysis of data for demographics and body satisfaction was conducted. The data were analyzed by correlation techniques and regression analyses with SPSS 24 for Windows.
 Results: The results of this research indicate that the participants who have lower BMI, WHR, WCR, or WSR tend to perceive higher evaluations of their appearance, pay more attention to their appearance and are more satisfied with their body areas. Participants who have higher BMI or WHR tend to be more anxious about being overweight. Participants who have lower weight, lower shoulder-to-shoulder and lower girth values tend to show higher AE, AO, and BAS. Participants who have a higher shoulder-to-shoulder, higher upper arm girth, higher chest girth and higher waist tend to have more preoccupation about being overweight.
 Conclusion/Implications: The results of this research can help fashion businesses consider targeting males’ body dissatisfaction in the design of their products by understanding the relationship between body dissatisfaction and body size of targeting males.
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