Ciska Jansen

{{Short description|Dutch track and field athlete}}

{{Use dmy dates|date=January 2024}}

{{Infobox sportsperson

| name =

| image =Ciska Janssen 1974.jpg

| image_size =

| caption =Ciska Janssen in 1974

| birth_name =

| fullname =

| nationality =

| residence =

|birth_date = {{birth date and age|df=yes|1944|9|23}}

| birth_place = Amsterdam, the Netherlands

| death_date =

| death_place =

| height = {{convert|1.75|m|ftin|abbr=on}}

| weight = {{convert|72|kg|lb|abbr=on}}

| country =

| sport = Pentathlon, long jump, high jump

| club = Sagitta, Amsterdam

| retired =

| olympics =

| highestranking =

| show-medals = yes

| medaltemplates =

}}

Franciska Johanna "Ciska" Jansen (born 23 September 1944) is a retired Dutch track and field athlete. She competed at the 1976 Summer Olympics in the long jump and finished in 18th place.

After she reached age 40, her 6.21m jump exploded the world record for her age group, besting the previous record by Australian Olympian Helen Searle by 52 cm.{{Cite web | url=http://www.mastersathletics.net/fileadmin/html/Rankings/All_Time/longjumpwomen.htm | title=Long Jump ALL-TIME Rankings | access-date=17 July 2014 | archive-date=26 October 2018 | archive-url=https://web.archive.org/web/20181026015155/http://www.mastersathletics.net/fileadmin/html/Rankings/All_Time/longjumpwomen.htm | url-status=dead }} For point of comparison, Bob Beamon's record improvement was 55 cm. Her record would stand for almost 15 years.