Albertus Geldermans

{{Short description|Dutch cyclist (1935–2025)}}

{{Use dmy dates|date=January 2017}}

{{Infobox cyclist

| name = Albertus Geldermans

| image = Ab Geldermans 1957.jpg

| caption = Geldermans in 1957

| full_name = Albertus Geldermans

| nickname = Ab

| birth_date = {{Birth date|1935|3|17|df=y}}

| birth_place = Beverwijk, Netherlands

| death_date = {{Death date and age|2025|4|20|1935|3|17|df=y}}

| death_place =

| height =

| weight =

| currentteam =

| discipline = Road

| role = Rider

| ridertype =

| proyears1 =

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| majorwins = Liège–Bastogne–Liège (1960)

}}

Albertus "Ab" Geldermans (17 March 1935 – 20 April 2025) was a Dutch professional road bicycle racer and directeur sportif. He was professional from 1959 to 1966 and rode seven editions of the Tour de France. In 1962 he finished fifth overall and wore the yellow jersey for two days. In 1960 Geldermans won Liège–Bastogne–Liège{{cite web|url=https://www.wielerflits.nl/nieuws/ab-geldermans-oud-winnaar-van-luik-bastenaken-luik-op-90-jarige-leeftijd-overleden/|title=Ab Geldermans, oud-winnaar van Luik-Bastenaken-Luik, op 90-jarige leeftijd overleden|website=Wielerflits|language=nl|date=21 April 2025|access-date=21 April 2025}} and won the Deutschland Tour. In 1962 he was Dutch road race champion. Afterwards he became directeur sportif of the Dutch national cycling team that competed in the 1967 Tour de France and directed Jan Janssen to victory in the 1968 Tour de France.

Geldermans died on 20 April 2025, at the age of 90.{{cite web|url=https://www.noordhollandsdagblad.nl/sport/ab-geldermans-voormalig-drager-van-de-gele-trui-is-overleden.-de-beverwijker-werd-negentig-jaar/59934556.html|title=Ab Geldermans, voormalig drager van de gele trui, is overleden. De Beverwijker werd negentig jaar|newspaper=Noordhollands Dagblad|first=Kees|last=Van Dalsem|language=nl|date=21 April 2025|access-date=21 April 2025}} He had been the oldest living Tour de France' yellow-jersey holder up until his death.{{cite web|url=https://www.nhnieuws.nl/nieuws/249132/oud-wielrenner-ab-geldermans-84-heeft-een-leven-lang-lol-gehad-van-de-gele-trui|title=Oud-wielrenner Ab Geldermans (84) heeft een leven lang lol gehad van de gele trui|website=NH Nieuws|language=nl|date=8 July 2019|access-date=21 April 2025}}