Matthew or Matt Armstrong may refer to:
- Matthew Armstrong (Australian footballer) (born 1967), Australian rules football player
- Matthew Armstrong (English footballer) (1919–1941), English football wing half killed in action in the Second World War
- Matt Armstrong (1911–1995), Scottish footballer
- Matthew John Armstrong (born 1973), American actor
- Matthew Armstrong, designer of the 2009 video game Borderlands
This disambiguation page lists articles about people with the same name.
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