Since 1931 the congresses have been organized every three years by IFATCC.
The exception were:
Congress of Stresa (Italy) 2010, held only two years after the congress in Spain, to avoid coinciding with ITMA 2011 (International Exhibition of Textile Machinery) in Barcelona as also in 2019 to avoid coinciding with ITMA 2019 again in Barcelona and 2020 due to pandemic situation worldwide.

24th IFATCC Congress (2016) Pardubice, CZ
23rd IFATCC Congress (2013) Budapest, HU
22nd IFATCC Congress (2010) Stresa, IT
21st IFATCC Congress (2008) Barcelona, ES
20th IFATCC Congress (2005) Wiemar, DE
19th IFATCC Congress (2002) Paris, FR
18th IFATCC Congress (1999) Copenhagen, DK
17th IFATCC Congress (1996) Vienn, AT
16th IFATCC Congress (1993) Maastrich,NL
15th IFATCC Congress (1990) Lucerne, CH
14th IFATCC  Congress (1987) Tampere, FI
13th IFATCC Congress (1984) London, UK
12th IFATCC Congress (1981) Budapest, HU
11th IFATCC Congress (1978) Venice, IT
10th IFATCC Congress (1975) Barcelona, ES
9th IFATCC Congress (1972) Munich, DE
8th IFATCC Congress (1968) Paris, FR
7th IFATCC Congress (1965) Vienn, AT
6th IFATCC Congres (1962) Noorddwijk, NL
5th IFATCC Congress (1959) London, UK
4th IFATCC Congress (1956) Florence, IT
3rd IFATCC Congress (1953) Lucerne, CH
2nd IFATCC Congress (1936) Stuttgart, DE
1st IFATCC Congress (1931) Paris, FR