The 25-year-old, who finished fourth in the 5,000m at this summer’s Tokyo Olympics, was found dead at her home in Kenya.
Tirop finished fourth in the 5,000m at this summer’s Tokyo Olympics and collected world championship bronze over 10,000m in 2017 og 2019.
Describing Tirop as “a young and bright talent”, Den internasjonale olympiske komité president Bach added: “Her performances at the Olympic Games Tokyo 2020 gave hope and inspiration to so many people. My thoughts go to the Kenyan Olympic community and especially to her friends and family.”
Coe, the president of World Athletics sa: “Athletics has lost one of its brightest young stars in the most tragic circumstances.
“This is a terrible blow to the entire athletics community, but especially to her family, her friends and Athletics Kenya and I send them all our most heartfelt condolences.”
Athletics Kenya confirmed the news earlier on Wednesday, saying it was working to discover more details about Tirop’s death.
“Kenya har mistet en juvel som var en av de raskest stigende friidrettsgigantene på den internasjonale scenen, takket være hennes iøynefallende forestillinger på banen,” Athletics Kenya said in a statement.
“Bare forrige måned, hun slo kun kvinnerekorden på 10 km for kvinner på Road to Records Race i Tyskland, timing 30:01.
"Vi ber om at Gud må gi familie og venner styrke i denne vanskelige tiden."