Ada of Holland (1208 – 15 June 1258) was a Dutch abbess of Rijnsburg Abbey from 1239.
She first appears in written records in 1233 and in 1239 she moves from being a nun to being the abbess of Rijnsburg Abbey.
[1] Because the abbey had been donated by her family she was allowed to be called the Lady of Rijnsburg.
Problems arose in 1244 when her brother, Otto III van Holland, required that she should refer important decisions to him and other clergy and monarchs.
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