Thiago Rangel Cionek (Polish pronunciation: [ˈtjaɡɔ ˈtɕɔnɛk], Brazilian Portuguese: [tʃiˈagu ˈtʃonek(i)]; born 21 April 1986) is a professional footballer who plays as a centre-back for Italian Serie C Group C club Avellino.

He moved to Europe for a brief spell at Portugal's GD Bragança before returning to Brazil with Clube de Regatas Brasil.

He then had a year in the Italian Serie B with Padova Calcio, before signing for another club from the same division, Modena FC on 2 September 2013.

Cionek made his international debut for the Poland national team on 13 May 2014, starting in a goalless friendly draw against Germany in Hamburg.

[8] On 19 June in Poland's initial World Cup match against Senegal, Cionek scored an own goal that opened a 2–1 loss.