Siana or Sianna is a feminine given name with multiple meanings and pronunciations.
The name is also a diminutive of Siân, the Welsh form of Jane and means "God is gracious.
In Hindi, 'Sia' means Goddess Sita, the wife of Lord Rama who always has a sacrificing heart.
The suffix 'nna' is derived from 'Annapurna' Goddess of inexhaustible food supply who satiates the appetite of all.
In Sanskrit, 'Anna' means food/foodgrain/ cooked meal, thereby implying a woman who keeps her family & dear ones happy & contented always by caring for them.