Dinamika Pendidikan 14 (1) (2019) 116-126 Dinamika Pendidikan http://journal.unnes.ac.id/nju/index.php/dp Negotiation Competencies Based on Assertiveness and Self Efficacy for Vocational High School Students S. Sriyanto 1 , Indri Murniawaty 2 , Tri Na’imah 3 DOI: 10.15294/dp.v14i1.18420 1 Department of Social Studies, Post Graduate Program, Universitas Muhammadiyah Purwokerto, Purwokerto, Indonesia 2 Department of Economis Education, Faculty of Ecoconomic, Universitas Negeri Semarang, Semarang, Indo- nesia 3 Department of Psychology, Faculty of Psychology Universitas Muhammadiyah Purwokerto, Purwokerto, Indonesia Abstract This study aims to determine the association of assertiveness, self efficacy with the competency of negotiations for students. The study was conducted in State Voca- tional School 1 Bawang Banjarnegara involving 132 samples in Study Program of Online Marketing Business. Sampling technique was stratified random sampling, and data collection technique used questionnaire instruments. Data were analyzed through correlation technique data of product moment. Based on hypothesis test- ing, results can be obtained that assertiveness had a positive relationship with ne- gotiation competencies. Similarly, self efficacy also had a positive relationship to negotiation competencies; these two independent variables also had a positive and significant relationship to negotiation competencies. The implications of the results of this study were that the negotiation competencies for students can support ca- reers in marketing so that it required the formation of assertiveness and an increase in self-efficacy in the learning process. How to Cite Sriyanto, S., Murniawaty, I., & Na’imah, Tri.(2019).Negotiation Competencies Based on Assertiveness and Self Efficacy for Vocational High School Students .Di- namika Pendidikan, 14(1), 116-126. © 2019 Universitas Negeri Semarang History Article Received March 08, 2019 Approved May 20, 2019 Published June 30, 2019 Keywords Assertiveness; Self Efficacy; Negotiation; Competency  Correspondence Author: Jl. Raya Dukuhwaluh Purwokerto, Indonesia, 53182 Email: sriyanto1907@ump.ac.id p-ISSN 1907-3720 e-ISSN 2502-5074