Doijum

{{Infobox settlement

| name = Doijum

| native_name = {{native_name|fy|Doaium}}

| settlement_type = Hamlet

| image_skyline = Franekerweg 11, Boerderij Het Fry Kien, anno 1887 - Hitzum - 20113744 - RCE.jpg

| image_alt =

| image_caption = Farmhouse in Doijum, 1887

| image_flag =

| flag_size =

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| image_shield =

| shield_size =

| shield_alt =

| pushpin_map = Netherlands Friesland#Netherlands

| pushpin_label_position =

| pushpin_mapsize = 250

| pushpin_map_caption = Location in the province of Friesland in the Netherlands

| image_map =

| map_alt =

| map_caption =

| coordinates = {{coord|53.16474|N|5.53161|E|region:NL|display=inline,title}}

| coordinates_footnotes =

| subdivision_type = Country

| subdivision_name = Netherlands

| subdivision_type1 = Province

| subdivision_name1 = Friesland

| subdivision_type2 = Municipality

| subdivision_name2 = Waadhoeke

| subdivision_type3 = Town/village

| subdivision_name3 = {{Hlist|Franeker|Hitzum|Tzum}}

| extinct_title =

| extinct_date =

| unit_pref = Metric

| area_footnotes =

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| elevation_footnotes = {{cite web

|url = http://www.ahn.nl/postcodetool

|title = Postcodetool for 8805TB

|language = nl

|author =

|work = Actueel Hoogtebestand Nederland

|publisher = Het Waterschapshuis

|access-date = 6 October 2023}}

| elevation_m = 0.1

| elevation_max_footnotes =

| elevation_max_m =

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| population_footnotes = {{Cite web |url=https://www.plaatsengids.nl/doijum |title=Doijum |website=Plaatsengids |access-date=6 October 2023 |language=nl}}

| population_total = {{circa|25}}

| population_as_of =

| population_density_km2 = auto

| population_demonym =

| timezone1 = CET

| utc_offset1 = +1

| timezone1_DST = CEST

| utc_offset1_DST = +2

| postal_code_type = Postcode

| postal_code = 8805

| area_code_type = Area code

| area_code = 0517

| website =

| footnotes =

}}

Doijum ({{IPA|nl|ˈdoːi.ʏm}}; {{langx|fy|Doaium}}) is a hamlet in the Dutch municipality of Waadhoeke in the province of Friesland. It is located east of Hitzum, southeast of Kie and south of Franeker. The Doijumervaart flows through the hamlet.

The residential area of the hamlet is located on the Franekerweg and Hitzumerweg, between the Binnenpad van Hitzum and the Lollummerweg where it eventually turns into the hamlet of Miedum. It is spread over three settlements in terms of addressing; Hitzum, Franeker and Tzum.

In 1402 the hamlet was mentioned as Dodoghema buren and in 1406 as Do(e)deghum. In 1447 it is mentioned as Doijem.{{Cite book |title=Friese plaatsnamen: alle steden, dorpen en gehuchten |last=Gildemacher |first=Karel F. |publisher=Friese Pers/Noordboek |location=Leeuwarden |year=2007 |isbn=9789033006432 |language=nl |page=254}} The name derived from a compound of Old Frisian Dodo (a personal name) suffixed with the collectivising suffix -ingi- and hēm ('home, settlement').{{Cite book |title=Nederlandse plaatsnamen verklaard |last1=Van Berkel |first1=Gerard |last2=Samplonius |first2=Kees |year=2018 |publisher=Mijnbestseller.nl |isbn=9789463679176 |language=nl}}

Before the municipal reorganization of 1984, the hamlet was divided between two municipalities, the municipality of Franeker and the municipality of Franekeradeel. After that, until 2018, it fell entirely within the merged municipality of Franekeradeel of the same name.