▁to ▁N gu y ễ n ▁to ▁avoid ▁pro sec ution . ▁As ▁with ▁other ▁common ▁s urn ames , ▁people ▁having ▁this ▁surname ▁are ▁not ▁necessarily ▁related . ▁ ▁In ▁Vietnam ese ▁custom ▁as ▁with ▁other ▁East ▁Asian ▁cult ures , ▁the ▁surname ▁preced es ▁the ▁given ▁names . ▁ ▁Us age ▁outside ▁Vietnam ▁The ▁pre val ence ▁of ▁N gu y ễ n ▁as ▁a ▁family ▁name ▁in ▁Vietnam ▁extends ▁to ▁outside ▁the ▁country , ▁due ▁to ▁numerous ▁and ▁w ides p read ▁Vietnam ese ▁em igr ants . ▁Out side ▁Vietnam , ▁the ▁surname ▁is ▁commonly ▁rendered ▁without ▁dia crit ics , ▁as ▁“ N gu yen ”. ▁N gu yen ▁is ▁the ▁sevent h ▁most ▁common ▁family ▁name ▁in ▁Australia ▁( second ▁only ▁to ▁Smith ▁in ▁the ▁Melbourne ▁phone ▁books ), ▁and ▁the ▁ 5 4 th ▁most ▁common ▁in ▁France . ▁It ▁is ▁the ▁ 5 6 th ▁most ▁common ▁surname ▁in ▁Norway ▁and ▁to ps ▁the ▁foreign ▁name ▁list ▁in ▁the ▁Czech ▁Republic . ▁▁ ▁In ▁the ▁United ▁States , ▁N gu yen ▁is ▁the ▁ 4 1 st ▁most - common ▁surname ▁and ▁is ▁shared ▁by ▁more ▁than ▁ 4 3 7 , 0 0 0 ▁individuals , ▁according ▁to ▁the ▁ 2 0 1 0 ▁Census ; ▁it ▁was ▁the ▁ 5 7 th ▁and ▁ 2 2 9 th ▁most - common ▁surname , ▁respectively , ▁in ▁the ▁ 2 0 0 0 ▁and ▁ 1 9 9 0 ▁cens uses . ▁It ▁is