• Sonata No 10 in C, K.330 (300h)
• Sonata No 11 in A (with a Turkish March "Alla Turca"), K.331 (300i)
• Sonata No 12 in F, K.332 (300k)
• Sonata No 13 in Bb, K.333 (315c)
• Sonata No 14 in Cm (Fantasy & Sonata), K.475/457
• Sonata No 15 in F, K.533/494
• Sonata No 16 in C, K.545 "Facile" or "Simplice"
• Sonata No 17 in Bb, K.570
• Sonata No 18 in D, K.576