Afusat Omolola OGUNLADE2024-06-112024-06-112023-12M.EDhttps://repository.lcu.edu.ng/handle/123456789/496This study examined self-esteem and parenting styles as determinants of adolescents’ depression among senior secondary school students in Oyo State. Three research questions and two hypotheses were raised. Descriptive survey research design was employed. Target population comprised of all public SSS3 students (55,728) of which 2,884 were sampled using multi-stage sampling technique. Questionnaire titled – “Self- Esteem, Parenting Style and Depression Questionnaire (SEPSDQ) (α = .817)” was used to gather data. Data was analysed using descriptive and inferential statistics. Results showed low (mild) level of depression (x̅= 2.240), high level of self-esteem in area of self-acceptance (x̅= 2.787) and low level in area of self-confidence (x̅= 2.493). Authoritarian parenting style is mostly adopted (x̅= 2.728) by the students’ parents while authoritative (x̅= 2.329) and permissive (x̅= 2.159) parenting styles are less adopted. Hypotheses showed significant joint contribution of self-esteem and parenting styles to adolescent depression (F6, 2540 = 9.974; P<0.05). Furthermore, self-acceptance (β = -.098; t = -2.698; P<0.05), self-confidence (β = -.160; t = 3.009; P<0.05), authoritarian parenting style (β = .151; t = 2.991; P<0.05), and permissive parenting style (β = .081; t = 2.317; P<0.05) all have significant relative influence on adolescent depression except authoritative parenting style (β = -.065; t = -.721; P>0.05). In conclusion, low level of the students’ self-esteem in area of self-confidence and mostly employed authoritarian parenting style of the students’ parents could be responsible for the mild level of depression among the public secondary school students in Oyo state. It was recommended amongst others that parents should imbibe authoritative parenting and ensure that they improve the self-acceptance and self-confidence of their children. Keywords: Self-Esteem, Parenting Style, Adolescent, Depression Word Count: 226enSelf-EsteemParenting StyleAdolescentDepressionThesis