Boys and girls from Bisham Primary, Cookham Rise Primary, Manor Green school and White Waltham schools participated.
The 80 children contested floor, body management and vault categories.
Held at Newlands Girls' School on Tuesday, the event was organised by Ascot and Maidenhead School Partnership.
Partnership development manager Emma Fitzgerald said: "It is great to see children taking part in a gymnastics competition.
"For many this is their first experience of representing their school or taking part in a gym competition."
Cookham Rise Primary School won the key step one competition for year one and two pupils.
White Waltham Primary triumped in both the key-step two and key-step three sectiions for year's three, four, five and six.
The two schools will go on to represent Maidenhead in next year's Berkshire School Games.
Top Ten Articles
The Met Office has issued a yellow alert for Windsor and Maidenhead, Slough and Wokingham, warning that rain moving eastwards across the south of the country may turn to snow in some places.