Sachin

 Indra.

Sadashiv

 Easwar, Shiv.

Sadanand

 One who is always happy. Vishnu.

Saeed

 Priestly.

Sagar, Saagar

 Sea.

Saahil

 Guide.

Sahadev

 Last and most beautiful of Pandava brothers and Madri's son.

Sahar

 Dawn. Morning.

Sahasranam

 Thousand names.

Sahil

 Sea-shore.

Sahithi

 Literature.

Saikumar

 Son of Sai Baba.

Sai Prasad

 Gift of Sai Baba.

Saleem

 Healthy. Simple.

Salman

 Peaceful.

Salomon

 Another form of Solomon.

Salvador

 Savior.

Salvatore

Savior.

Sam

 A short form of Samuel.

Samay

 God of time.

Samir

 God of Wind.

Samith

 Collected. United with. Complete.

Sameer

 Breeze. Wind.

Sampath

 Riches.

Samuel

 Told by God.

Sanat

 Lord Brahma.

Sandeep

 Lamp.

Sanghamitra

 Friend of society.

Sanjay

 Name of a Minister in King Dhrutarashtra cabinet.

Sanjeev

 Hanuman who brought the life saving herb called Sanjeevini to revive Lakshman.

Sanjith

 Healthy.

Sanketh

 Signal. Symbol.

Santosh

 Happiness. Joy. Pleasure.

Sanurag

 Affectionate.

Sanvi

 Knowledge.

Saroj

 Lotus.

Sarvagya

 A person with all the knowledge.

Sarvajit

 One who conquered everythinig.

Sarvesh

 One who is everywhere. God.

Sarangapani

 Easwar.

Sasi

 Moon.

Sathvik

 One who is having good character.

Satish

 One who speaks truth. Sati's husband. Shiva.

Satej

 Sharp.

Satrajit

 Name of a king. Satyabhama's father.

Satya

 Truth.

Satya Narayana

 Another name of Lord Vishnu. A Divinity.

Savannah

 Treeless Plain.

Scott

 From Scotland. A Gael. Scotsman.

Schuyler

 Shield. Scholar. Shelter.

Sean

 Variant of John.

Sebastian

 Revered.

Seetharaman

 Lord Sree Ram.

Sehen

 Patience.

Senthil

 Another name for Lord Muruga.

Sesh

 Serpent God.

Seshagiri

 Hills at Tirumala.

Seth

 Appointed. The third named son of Adam and Eve.

Seton

 Town near the sea.

Shaakir

 Contented.

Shae

 Courteous. Gift

Shailesh

 Lord of the Mountain.

Shamarah

 Ready for battle.

Shambhu

 Shiva.

Shamsundar

 Sri Krishna.

Shankar

 Shiva. Easwar.

Shanmukh

 Another name of Lord Muruga.

Shantanu

 An ancient Indian king and Father of Bheeshma.

Shantaram

 One who is cool like Rama. Calm person.

Shanthan

 One who is always cool and calm.

Sharat

 Name of a Season.

Sharma

 Joy.

Shashank

 Moon.

Shatrugna

 Sri Rama's younger brother.

Shauna

 Variant of John.

Shavac

 Given by god.

Shawn

 God is Gracious.

Shibi

 Name of a king.

Shikhadri

 Top of mountain.

Shlomo

 Hebrew form of Solomon.

Shiv, Shiva ,Siva

 Easwar.

Shivaraman

 Lord Sree Ram.

Shreekumar

 Son of Goddess Lakshmi.

Shreeputra

 Son of Goddess Lakshmi.

Shreyas

 Superior God.

Shalom

 Peace.

Shea

 Courteous. Gift

Shraavan, Shravan

 Name of a month.

Shrivatsan

 Another name of vishnu. A mole on vishnu's chest. A favourite of sri.

Shur

 Brave.

Shylesh

 Lord Shiv in the Himalayas.

Shylendra

 King.

Shyam

 Sri Krishna.

Siddheswar

 Shiva.

Siddha

 One who achieved his goals.

Silas

 Short form of Silvan.

Silvan

 Forest dweller.

Singh

 Lion.

Sinjin

 St.John.

Siva Prasad

 Gift of lord Shiva.

Sivaraman

 Lord Sree Ram.