Their commanding performances in the finals saw them overcome Northwood B and St Helens.
The Ventnor team, led by captain Dan Cox, showcased their prowess on the field.
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In the final match against St Helens, Cox achieved figures of 2-16, with Will Mew claiming 2-17.
St Helens, with Mark Hartnell as their top-scorer, only managed 76 runs.
Hartnell also claimed figures of 2-30, as Ventnor A found themselves at 52-3.
However, an unbeaten 26 from Toby Noyes ensured a comfortable three-wicket victory, with 22 balls to spare.
Earlier in the evening, Ventnor A enjoyed an easy win against Northwood B.
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George Watts and Cox scored 30 not out and 24 respectively, helping Ventnor reach 134-4.
In response, Northwood B were restricted to a paltry 38 runs, courtesy of Charlie Calloway and Watts, who took two wickets each.
St Helens reached the final after a close victory over Porchfield.
Despite a slow start, two impressive innings from Marc Allen and Mark Hartnell saw them reach 149-4.
They then restricted Porchfield to 120-4.
With their back-to-back titles, Ventnor A will now represent the Isle of Wight in the regional stages of the ECB Indoor Club Championship in March next year.
