| Event: | Modern Pentathlon |
| Games: | 2018 Summer Youth |
| Venue: | Parque Polideportivo Roca Tecnópolis |
| Dates: | October 12–16 |
| Num Events: | 3 (1 boys, 1 girls, 1 mixed) |
| Competitors: | 48 |
| Nations: | 30 |
| Prev: | 2014 |
| Next: | 2026 |
Modern pentathlon at the 2018 Summer Youth Olympics was held from 12 to 16 October. The events took place at the Parque Polideportivo Roca and Tecnópolis in Buenos Aires, Argentina.
Each National Olympic Committee (NOC) can enter a maximum of 2 competitors, 1 per each gender. As hosts, Argentina was given the maximum quota and a further 4, 2 in each gender was initially given to the Tripartite Commission. The remaining 42 places shall be decided in three stages; firstly four continental qualification tournaments held in 2017, second the 2018 World Youth A Championships and finally the Olympic Youth Pentathlon World Rankings. Should a nation qualify more than 1 athlete per gender the nation will be allowed to choose which athlete will compete.[1]
Each athlete will compete in both the individual and mixed events. To be eligible to participate at the Youth Olympics athletes must have been born between 1 January 2000 and 31 December 2003.
| Event | Location | Date | Total Places | Qualified | |
|---|---|---|---|---|---|
| Host Nation | - | - | 1 | ||
| European Youth Olympic Games Qualifications[2] | 10–13 August 2017 | 3 | |||
| Pan American Youth Olympic Qualification[3] | 30 Aug.–1 Sept. 2017 | 2 | |||
| Asia/Oceania Youth Olympic Qualification[4] | 14 September 2017 | 2 | |||
| 1 | |||||
| Africa Youth Olympic Qualification[5] | 5–6 December 2017 | 1 | |||
| Youth A World Championships[6] | 7–16 April 2018 | 6 | |||
| Olympic Youth A Pentathlon World Ranking | - | 1 July 2018 | 6 | ||
| Tripartite Invitation | - | - | 2 | ||
| TOTAL | 24 |
* NOC must decide which athlete to send.
| Event | Location | Date | Total Places | Qualified | |
|---|---|---|---|---|---|
| Host Nation | - | - | 1 | ||
| European Youth Olympic Games Qualifications | 10–13 August 2017 | 3 | |||
| Pan American Youth Olympic Qualification | 30 Aug.–1 Sept. 2017 | 2 | |||
| Asia/Oceania Youth Olympic Qualification | 14 September 2017 | 2 | |||
| 1 | |||||
| Africa Youth Olympic Qualification | 5–6 December 2017 | 1 | |||
| Youth A World Championships | 7–16 April 2018 | 6 | |||
| Olympic Youth A Pentathlon World Ranking | - | 1 July 2018 | 6 | ||
| Tripartite Invitation | - | - | 2 | ||
| TOTAL | 24 |
* NOC must decide which athlete to send.
| Boys' individual | |||
| Girls' individual | |||
| Mixed relay | |||