The Cooperative Extension service was established in 1914 with the passage of the Smith-Lever Act. The role of Cooperative Extension to give non-formal, research-based education to the people. Cooperative Extension has been a partnership between the federal, state, and county government and the state land- grant universities. 4-H has been the youth development arm of the Cooperative Extension System and has been housed in Florida at the University of Florida. The people who deliver the 4-H program education have been known as 4-H agents, and the University of Florida has developed many different approaches for preparing 4-H agents early in their careers for success, including mentoring, professional support, and professional development opportunities. These supports have been based on the competencies, knowledge, skills, and personal characteristics needed for outstanding performance. Many competencies have been identified for agent job success in Florida (Brodeur et al. 2011; Harder, 2015). However, the competencies required for Florida early career agent success had not been identified. This Delphi study asked three expert panels to identify the competencies required for Florida early career agent success in years one and three. The panels were entry-level 4-H agents, 4-H agent mentors, and 4-H Regional Specialized Agents. Each panel independently identified competencies essential for Florida early career agent success. The panels identified 55 year-one and 67 year-three competencies that fall into 15 competency areas. Results of this study helped to establish the essential competencies for Florida early career agent success in the first and third year of employment. These competencies can be used to develop professional training programs to meet the needs of these early career agents. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]