Pierre-Ambroise Bosse (born 11 May 1992) is a retired French middle-distance runner. He won a gold medal in the 800 metres at the 2017 World Athletics Championship. Bosse set the French national record for the 800 m in 2014, with his time of 1.42.53.

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Pierre-Ambroise Bosse

Bosse in 2018
Personal information
Nationality	French
Born	(1992-05-11) 11 May 1992 (age 32)[1] Nantes, France[1]
Height	1.85 m (6 ft 1 in)[1]
Weight	68 kg (150 lb)[1]
Sport
Country	France
Sport	Track
Event	800 meters
Retired	December 2023
Achievements and titles
Personal bests	Outdoor 400 m: 47.54 (Marseille 2016) 600 m: 1:13.21 (Birmingham 2014) NR 800 m: 1:42.53 (Monaco 2014) NR 1000 metres: 2:15.31 (Ostrava 2014) Indoor 600 m: 1:15.63 (Moskva 2013) 800 m: 1:45.95 (Madrid 2021) 1000 metres: 2:17.63 (New York 2014)
Medal record Men's athletics World Championships 2017 London 800 m European Championships 2012 Helsinki 800 m 2018 Berlin 800 m

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Bosse won the bronze medal in the 800 metres at the 2012 European Championships held in Helsinki.

On 18 July 2014, Bosse ran his personal best time (1:42.53) at the 800 metres race at the Herculis meet, a Diamond League meeting held in Monaco; he finished the race in second place behind Nijel Amos of Botswana.^[2] Both Amos's and Bosse's times at this meeting were the first and second fastest 800 metre times in the world for 2014; with Bosse running fast enough to be the new French national record holder for the 800 metres outdoors.^[3]

On 8 August 2017, he won the men's 800 m at the IAAF World Championships in London in a time of 1:44.67. With the absence of David Rudisha due to injury the 800 m final was relatively wide open.^[4] However, with Bosse not having run close to the world lead, and having to start his season late due to injury he was not considered a favorite.^[5] The final went out at a moderate pace with the leader Brandon McBride passing through 400 m in 50.76. While Kipyegon Bett and Nijel Amos battled each other as they took the lead, Bosse ran a clear path around the outside to take the lead going into the final turn. He emerged from the turn with a three-metre lead on the battle and neither could muster a challenge. His final challengers were Adam Kszczot and Kyle Langford, making a late run from the back of the pack, but Bosse was too far ahead to see the challengers. He looked at the scoreboard, pointing at himself in disbelief.^[6]

Bosse announced his retirement from the sport in December 2023, following a string of injuries.^[7]