Maltase (EC 3.2. 1.20, alpha-glucosidase, glucoinvertase, glucosidosucrase, maltase-glucoamylase, alpha-glucopyranosidase, glucosidoinvertase, alpha-D-glucosidase, alpha-glucoside hydrolase, alpha-1, 4-glucosidase, alpha-D-glucoside glucohydrolase) is an enzyme located in on the brush border of the small intestine that breaks down the disaccharide maltose. Maltase catalyzes the hydrolysis of maltose to the simple sugar glucose. This enzyme is found in plants, bacteria, and yeast. Acid maltase deficiency is categorized into three separate types based on the age of onset of symptoms in the affected individual.

Where is maltase found in the digestive system? Let's have some stream of consciousness first.
To answer the question, consider the following: Maltase (EC 3.2. 1.20, alpha-glucosidase, glucoinvertase, glucosidosucrase, maltase-glucoamylase, alpha-glucopyranosidase, glucosidoinvertase, alpha-D-glucosidase, alpha-glucoside hydrolase, alpha-1, 4-glucosidase, alpha-D-glucoside glucohydrolase) is an enzyme located in on the brush border of the small intestine that breaks down the disaccharide maltose. So, the answer is on the brush border of the small intestine.