This qualitative descriptive study explored how novice online K-12 teachers in Arizona described the influence of organizational, interpersonal, and intrapersonal leader support on their psychological needs. Based on the theoretical framework, Support for Teachers' Psychological Needs (STPN), the study investigated leader support for organization, interpersonal, and intrapersonal psychological needs of teachers. The following research questions were used to guide the study and to address the problem statement: (RQ1) How do novice online K-12 teachers describe the influence of organizational leader support on their psychological needs? (RQ2) How do novice online K-12 teachers describe the influence of interpersonal leader support on their psychological needs? (RQ3) How do novice online K-12 teachers describe the influence of intrapersonal leader support on their psychological needs? Using questionnaires and semi-structured interviews, the study sample included 39 novice K-12 online teachers in Arizona. The data from both questionnaires and interview transcripts were analyzed using Reflexive Thematic Analysis (RTA). Recommendations included three practical ways that K-12 online leaders can increase competence, autonomy, and relatedness among their staff, as well as theoretical implications of the support for teachers' psychological needs research extended to the K-12 online setting. [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://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]