The men's 800 metres at the 2023 World Para Athletics Championships were held across 3 classifications at Charlety Stadium, Paris, France, on 15 and 17 July.

Medalists T34Walid KtilaMohamed HammadiGong WenhaoT53Brent LakatosPongsakorn PaeyoBrian SiemannT54Marcel HugFaisal AlrajehiDaniel Sidbury

T34 The event took place on 17 July. Rank Lane Name Nationality Time Notes 3 Walid Ktila 1:39.23 5 Mohamed Hammadi 1:39.93 1 Gong Wenhao 1:40.13 4 4 Austin Smeenk 1:40.19 5 8 Wang Yang 1:40.44 6 6 Chaiwat Rattana 1:40.63 7 2 Rheed McCracken 1:44.34 8 7 Roberto Michel 1:44.87

T53 The event took place on 15 July. Rank Lane Name Nationality Time Notes 5 Brent Lakatos 1:34.31 3 Pongsakorn Paeyo 1:34.39 2 Brian Siemann 1:36.65 4 4 Masaberee Arsae 1:37.96 5 8 Pierre Fairbank 1:37.96 6 6 Sopa Intasen 1:38.15 7 7 Yoo Byung-hoon 1:39.09 8 1 Nicolas Brignone 1:41.57

T54 The event took place on 17 July. Rank Lane Name Nationality Time Notes 6 Marcel Hug 1:29.00 4 Faisal Alrajehi 1:29.61 3 Daniel Sidbury 1:29.72 (.711) 4 1 Hu Yang 1:29.72 (.713) 5 5 Nathan Maguire 1:30.12 6 2 Saichon Konjen 1:31.58 7 7 Prawat Wahoram 1:31.76 8 8 Athiwat Paeng-nuea 1:32.02

References