Sixteen Names of Ganesha

Sumukhascha Ekadanthascha
Kapilo Gajakarnakaha
Lambodarascha Vikato 
Vighnaraajo Ganaadhipaa

Meaning: The various names and associated forms of God Ganesha are enumerated and need to be meditated upon here – the one with an auspicious face, the single tusked Lord, the one who is of red color, the one with the ears of an elephant, the one with a big stomach, the one with a jovial disposition, the controller of obstacles, the Lord of the Ganas.

Dhoomaketur Ganaadhyashah
Phaalachandro Gajaanana
Vakratundo Shoorpakarno
Heyrambho Skandapoorvajaha

Meaning: The one of smoke gray color, the leader of the ganas, the one who has moon in the front of his forehead, the elephant faced one, the one with a curved trunk (or broken tusk), the one with big (basket like) ears, the one who is heroic like a buffalo, the elder brother of Skanda (Skanda is another name for Lord Subrahmanya)

Shodashaitaani Namaani
Yah Pateth Srunuyaadapi
Vidyaarambhe Vivahe Cha 
Praveshey Nirgamey Tatah
Sangraamey Sarva Kaaryeshu
Vighnas Tasya Na Jaayathe

Abheepsitaartha Siddhyartham 
Poojitoya Surairapi
Sarva Vighna Chhido Tasmai 
Sree Ganaadhipataye Namaha

Meaning: Whoever the one who recites and listens to these sixteen names at the beginning of studies, at the time of marriage, while entering or departing a place, or at the battle field, all their obstacles will be removed. Even the Gods worship Lord Ganesha to receive the fulfillment of their actions. Oh Lord Ganesh, the One who has this power of destroying all the obstacles in the way of the devotees, I prostrate before you.

From: Saidarshan.org