| Color1: | white |
| Color2: |
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| BK Armex Děčín | |
| League: | NBL |
| Founded: | 1945 |
| Arena: | ARMEX Sportcentrum |
| Capacity: | 1,200 |
| Location: | Děčín, Czech Republic |
| Colors: | Blue and White |
| Website: | bkdecin.cz |
| H Body: | FFFFFF |
| H Pattern B: | _blackarc |
| H Shorts: | FFFFFF |
| A Body: | 1c3e7b |
| A Pattern B: | _whitesleevelinesandsides |
| A Shorts: | 1c3e7b |
BK Děčín, for sponsorships reasons named BK Armex Děčín, is a Czech professional basketball club based in the city of Děčín. They play in the Czech National Basketball League – the highest competition in the Czech Republic.
In 1974, Děčín played in the Czechoslovak Premier League for the first time. The team immediately relegated back to the second league, after one season. In 1993, Děčín promoted to the first tier NBL once again, but this time it stayed there until now.
In 2015, 2016 and 2019, Děčín reached the finals of the NBL. However, it never won a game as it was swept in all series by dominant Basketball Nymburk.
Runner-up (3): 2014–15, 2015–16, 2018–19
Third place (4): 1997–98, 2008–09, 2010–11, 2011–12
Runner-up (2): 2015, 2016