The study was conducted in the coastal land area in Bugel II Kulonprogo, Yogyakarta started on February 2017 until September 2017. The study aimed to studying the level of light intensity with seed oil content of sunflower (Helianthus annuus L.) and determine the best light intensity to cultivate sunflower (Helianthus annuus L.) in land coast area. The experimental method in this research used Light Intensity consist of three: Light Intensity 100%; Light Intensity 75%; Light Intensity 45%. The experiment arranged by Randomized Complete Block Design (RCBD). The parameter being observed was the accretion of plant height, the accretion of number of leaf, leaf area, fresh weight and dry weight of root and crown, flowering time, the effective number of flower, the number of pithy seeds and the number of empty seeds, the weight of pithy seeds, the result of seeds per hectare and the oil content. The result showed that variation of sunlight intensity did not give affect on sunflower seed oil content. Light Intensity 100% is the best for cultivation of sunflower especialy on accretion the plant height, the accretion of number of leaves, leaf area, the dry weight of crown, the flowering time, number of pithy seeds, the weight of pithy seeds and the result of seeds per hectare.