A new and distinct cultivar of Chrysanthemum plant named 'Sweet Yojeanette', characterized by its upright and outwardly spreading plant habit; freely branching habit; dense and full plant habit; uniform and freely flowering habit; daisy-type inflorescences with elongated oblong-shaped ray florets; creamy white-colored ray florets and bright yellow-colored disc florets; and natural season flowering in early October in the Northern Hemisphere.