Ab Krook (18 June 1944 – 13 October 2020) was a Dutch speed skating coach between 1977 and 2006. He was also a speed skater between 1967 and 1971. He competed at Dutch National Championships, but never reached the top. He was born in Oud-Loosdrecht, Netherlands.
Krook had a cerebral infarction in 2018. He died from problems caused by a second infarction on 13 October 2020 in Blaricum, Netherlands, aged 76.[2][3][4]