Krzysztof Ignaczak was born in Wałbrzych, Poland. He is married to Iwona. They have two children: a son, Sebastian, and a daughter, Dominika (who was born after the European Championship 2009). His best friend was volleyball player Arkadiusz Gołaś, who died in a tragic car accident in 2005. Since then Ignaczak played with his shirt number – 16.
In 2012 after seven-year domination of PGE Skra Bełchatów, he won with Asseco Resovia Rzeszów title of Polish Champion.[1] In next year his team and he replied this success and gained second title of Polish Champions 2013.[2]). In season 2013/2014 won Polish SuperCup 2013 and Asseco Resovia Rzeszów, including Ignaczak, lost with PGE Skra Bełchatów in the final of Polish Championship and gained silver medal. On 29 March 2015 his team lost in final of 2014–15 CEV Champions League and achieved silver medal.[3][4] In April 2015 Ignaczak won third title of Polish Champion with Asseco Resovia and sixth title in career.[5] On 21 September 2016 Ignaczak ended up his sporting career and announced it on media.[6]
Despite previously having announced the end of his sporting career, he decided to sign a contract for the rest of the season with the team IBB Polonia London in the English volleyball league on 10 March 2017. His presence, as current World Champion, at the club serves to promote volleyball in Great Britain and in the world.[7]