▁may ▁use ▁either ▁parent ' s ▁surname . ▁It ▁is ▁also ▁common ▁for ▁two ▁children ▁born ▁to ▁the ▁same ▁parents ▁to ▁take ▁different ▁s urn ames , ▁one ▁after ▁the ▁father ▁and ▁the ▁other ▁after ▁the ▁mother . ▁It ▁is ▁also ▁possible , ▁though ▁far ▁less ▁common , ▁for ▁a ▁child ▁to ▁combine ▁both ▁parents ' ▁s urn ames . ▁ ▁Hong ▁Kong ▁Due ▁to ▁British ▁influence , ▁some ▁people ▁in ▁Hong ▁Kong ▁have ▁also ▁adopted ▁the ▁tradition ▁of ▁women ▁changing ▁their ▁English ▁last ▁name , ▁or ▁prep ending ▁their ▁husband ' s ▁Chinese ▁surname ▁to ▁her ▁own ▁in ▁official ▁occasions ▁or ▁business ▁cards ▁but ▁rarely ▁on ▁resident ▁identification ▁or ▁travel ▁documents . ▁Among st ▁the ▁Chinese ▁di as por a ▁over se as , ▁especially ▁in ▁S out heast ▁Asia , ▁women ▁rarely ▁leg ally ▁adopt ▁their ▁sp ouse ' s ▁surname . ▁ ▁Iran ▁ ▁It ▁became ▁mand atory ▁in ▁ 1 9 1 8 ▁to ▁use ▁surname ▁in ▁Iran , ▁and ▁only ▁in ▁this ▁time , ▁the ▁heads ▁of ▁families ▁had ▁the ▁right ▁to ▁choose ▁their ▁family ▁members ' ▁( including ▁the ▁wife ) ▁surname . ▁It ▁is ▁stated ▁in ▁the ▁article ▁four ▁of ▁the ▁law ▁on ▁Civil ▁Reg istration ▁in ▁ 1 9 2 5 , ▁that ▁" Every body ▁should ▁choose ▁his / her ▁own ▁name . ▁The ▁wife ... ▁maintain s ▁her ▁family ▁name ▁that ▁was ▁called ▁by ." ▁The ▁same ▁thing ▁has ▁been ▁rest ated ▁in ▁the ▁article ▁three ▁of ▁the ▁law ▁on ▁Civil ▁Reg istration