Kajetan Duszyński

{{Short description|Polish sprinter (born 1995)}}

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

{{Infobox sportsperson

| name = Kajetan Duszyński

| full_name = Kajetan Patryk Duszyński

| image = Kajetan_Duszyński.jpg

| image_size = 160px

| caption = Kajetan Duszyński in 2021

| fullname =

| birth_date = {{birth date and age|1995|05|12|df=yes}}

| birth_place = Siemianowice Śląskie, Poland

| height =

| weight =

| sport = Athletics

| event = 400 metres

| club = TS AKS Chorzów (–2014)
AZS Łódź (2014–)

| education = Technical University of Łódź[https://data.2017.gov.taipei/atos/prod/eng/zb/engzb_athletics-athlete-profile-n171355-duszynski-kajetan-patryk.htm 2017 Unievrsiade bio]{{Dead link|date=February 2025 |bot=InternetArchiveBot |fix-attempted=yes }}

| coach = Krzysztof Podchul (–2015)
Krzysztof Węglarski (2015–)

| medaltemplates =

{{MedalSport | Men's athletics}}

{{MedalCountry |{{POL}} }}

{{Medal|Comp|Olympic Games}}

{{Medal|Gold|2020 Tokyo|4 × 400 m mixed}}

{{MedalCompetition|European Team Championships}}

{{Medal|Bronze|2021 Chorzów|4 × 400 m relay}}

{{MedalCompetition|Summer Universiade}}

{{MedalBronze|2019 Naples|4 × 400 m relay}}

{{Medal|Competition|European Athletics U23 Championships}}

{{MedalSilver | 2015 Tallinn|4 × 400 m relay}}

{{MedalSilver | 2017 Bydgoszcz|4 × 400 m relay}}

{{Medal|Competition|Polish Athletics Championships}}

{{MedalGold|2021 Poznań|400 m}}

{{MedalSilver|2017 Białystok|400 m}}

{{MedalSilver|2022 Suwałki|400 m}}

{{Medal|Competition|Polish Indoor Athletics Championships}}

{{MedalGold|2020 Toruń|400 m}}

{{MedalGold|2022 Toruń|400 m}}

}}

Kajetan Duszyński ({{IPA|pl|kaˈjɛtan duˈʂɨj̃skʲi}}; born 12 May 1995) is a Polish sprinter specialising in the 400 metres.{{World Athletics}} He represented his country in the 4 × 400 metres relay at the 2017 World Championships reaching the final, as well in the mixed 4 × 400 metres relay at the 2020 Summer Olympics where Poland won gold medal.