A new and distinct cultivar of Chrysanthemum plant named `Deklindiyellow`, characterized by its single-type inflorescences with oblong to ovate-shaped, yellow-colored ray florets; strong and upright flowering stems; freely flowering habit; early and uniform flowering response; plants flower about 41 days after the start of photoinductive treatments; and good postproduction longevity; plants maintain good substance for about 27 days in an interior environment.