Lord Shiva Mantras

Om Namah Shivaya
Om is Sat-Chit-Ananda Para-Brahman. ‘Namah Sivaya’ means ‘Prostration to Lord Siva.’ This is the five-lettered formula or the Panchakshara-Mantra of Lord Siva. This is a very powerful Mantra which will bestow on the chanter the Highest Bliss of Existence.
 
Om tatpurushaya vidmahe mahadevaya dhimahi tanno rudrah prachodayat
We comprehend (realise) that Celebrated Supreme Being (Purusha), and meditate upon that Great God, Mahadeva; may that Rudra impel us to do so. This is the Rudra Gayatri Mantra.
 
Om tryambakam yajamahe sugandhim pushtivardhanam urvarukamiva bandhanan mrityormukshiya maamritat
I bow down to that three-eyed Lord Siva, who is full of sweet fragrance, who nourishes the human beings. May He free me from the bondage of Samsara and death, just as a ripe cucumber fruit is separated from the creeper. May I be fixed in Immortality! This is the Maha-Mrityunjaya Mantra.