There were games, inflatables, football activities, carnival fun and competitions for Dons fans of all ages to take part in at the Marshall Arena.
The day was sponsored by MK Dons Sport and Education Trust principal partner Brioche Pasquier.
A spokesman for Mk Dons said: "Hopefully people enjoyed it, and that's the biggest thing. When people are paying hard-earned money to come to games, you want them to come and be excited and enjoy it. I hope they did that at out Family Fun Day."
Photographer Jane Russell was there to capture the happy faces.
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