Different hand mudras

Anjali Mudra	Gesture of reverence	Offering; Prayer	Palms touching, fingers pointing upward. May be placed in front of the sternum, the forehead, or overhead.
Dhyana Mudra	Psychic gesture of meditation		Upturned hands overlapping each other, usually right on top of left, with the thumbs touching.
Vāyu Mudra	Psychic gesture of air		Tip of index finger on the ball of the thumb, with thumb over the bent finger. Other three fingers are extended.
Shunya Mudra (or Shuni Mudra)	Psychic gesture of void or empty		Middle finger bent, with thumb over it. Other three fingers are extended. Sometimes, tip of the bent finger on the ball of the thumb.
Prithvi Mudra	Psychic gesture of earth		Ring finger bent, with thumb over it. Other three fingers are extended.
Varuna Mudra	Psychic gesture of Rain		Little finger bent, with thumb over it. Other three fingers are extended.
Shakti Mudra	Psychic gesture of power		Tips of little and ring fingers of both hands touching, with middle and index fingers folded. Sometimes, thumb folded towards the palm.
Hakini Mudra			Hand-steepling or finger-tenting: joining matching fingertips of right and left hands.[3]
Prāna Mudra	Psychic gesture to activate life force energy		Tips of little finger and ring fingers touch thumb. Other two fingers are extended.[4]
Apāna Mudra	Psychic gesture of life force		Tips of middle and ring fingers touch thumb. Other two fingers are extended.
Poorna Mudra / Brahma Mudra	Gesture of full breath		Thumb tucked in, placed at the base of the fingers. Remaining fingers curled over thumb, forming a fist. Hands are then tucked under the navel area, with fingers facing upwards, and back of the fingers touching.
Gyana Mudra / Chin Mudra	Psychic gesture of knowledge		Tip of index finger touches thumb, hand upturned. Other three fingers are extended.
Jnana Mudra / Chin Mudra	Psychic gesture of consciousness		Tip of index finger touches thumb, hand overturned. Other three fingers are extended.
Adi Mudra	The first gesture (as held by a new born baby)		Thumb tucked in, placed at the base of the fingers. Remaining fingers curled over thumb, forming a fist.
Chinmaya Mudra	Pervaded by consciousness mudrā		Tip of thumb and index finger touching. Other three fingers are folded.
Yoni Mudra	Attitude of the womb or source		Hands touching by the tips of thumbs and index fingers. Other six fingers are either interlaced or folded and pressed together.
Bhairav Mudra	Fierce or terrifying attitude		Upturned hands overlapping each other, usually right on top of left.
Hridaya Mudra	Heart gesture		Index finger bent under the thumb. Middle and ring finger touching tip of thumb. Little finger extended.
Vishnu Mudra	Hand gesture of Lord Vishnu		Thumb, ring and little finger extended. Index and middle finger folded and touching pad of thumb.
Granthita Mudra	Knot gesture		Thumb and index fingers of each hand touch at tips and are interlaced, other fingers are interlaced and folded at the knuckles.
Mahasir Mudra	Great head gesture		Done with the right hand. Ring finger is curled into the palm. The tips of the index and middle finger touch the tip of the thumb. Little finger extended.