Electronic Journal of Differential Equations, Vol. 2013 (2013), No. 49, pp. 1-10. Title: Oscillation criteria for third-order nonlinear differential equations with functional arguments Author: Yutaka Shoukaku (Kanazawa Univ., Kanazawa, Japan) Abstract: In this article, we consider the third-order nonlinear differential equations with functional arguments. By using the Riccati inequality, we find conditions for all solutions to be oscillatory. Submitted February 1, 2013. Published February 18, 2013. Math Subject Classifications: 34K11, 34C10. Key Words: Oscillation criteria; third order; Riccati inequality.