Keijō

{{Short description|Seoul during Japanese rule}}

{{Expand language|langcode=ko|langcode2=ja}}

{{Infobox former subdivision

|_noautocat=

|anthem=

|conventional_long_name=Keijō-fu

|common_name=

|subdivision=Former administrative district

|nation=Korea, Empire of Japan

|demonym=

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|title_deputy=|leader1=

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|legislature=

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|date_post=

|native_name=京城府

|date_event2=

|year_start=

|year_end=

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|today=South Korea

|date_event3=|event3=|event4=|date_event4=|event5=|date_event5=|life_span=|era=|event_pre=|date_pre=|event_post=|year_leader1=|image_flag=|s1=|gained_from1=|flag=|image_coat=File:Emblem of Gyeongseong-bu.svg|symbol_type=Emblem of Keijo|symbol=

|image_map=File:Keijō map of 1913 in English by the Imperial Japanese Government Railways.jpg

|image_map_caption=English map of Keijō made by Imperial Japanese Government Railways in 1913

|p1=|flag_p1=|border_p1=|image_p1=|area_gained_year1=|flag_s1=|border_s1=|image_s1=

|stat_year1=1940|stat_area1=|stat_pop1=1,142,000|area_lost1=|lost_to1=|area_lost_year1=|area_gained1=|image_border=|flag_type=|DivisionsMap=|Arms=|arms_caption=|Civic=|civic_caption=|HQ=|CodeName=|Code=|Divisions=|DivisionsNames=|Status=|membership_title1=|divisions_map_caption=|membership1=|membership_title2=|membership2=|membership_title3=|membership3=|membership_title4=|membership4=|membership_title5=|membership5=|footnotes=}}

{{Infobox Chinese

| title = Keijō

| hide = no

| kanji = 京城府

| hiragana = けいじょうふ

| romaji = Keijō-fu

| hangul = 경성부, 게이조부

| hanja = 京城府

| rr = Gyeongseong-bu, Geijo-bu

| mr = Kyŏngsŏng-bu, Keijo-bu

| ibox-order = ja, ko1}}

{{Nihongo|Keijō|京城|lead=yes}}, or Gyeongseong ({{Korean|hangul=경성}}), was an administrative district of Korea under Japanese rule that corresponds to the present Seoul, the capital of South Korea.