The Tertiary Education Trust Fund (TET FUND) was established by the Federal Government of Nigeria to tackle the problem of inadequate funding of tertiary institutions which had been a major source of industrial unrest and disharmony in these institutions. This study therefore examined the impact of TET FUND interventions on industrial peace in Olabisi Onabanjo University, Ogun State, Nigeria. Descriptive survey research design was adopted and qualitative data were collected using a questionnaire to elicit information from a total number of 250 respondents from total population of 1,723 staff of the university. From the sample size, 128 (56%) were male while 122 (54%) were female. Data collected were analyzed using regression analysis to test all the hypotheses at 0.05 level of significance. Findings revealed that TET FUND interventions have significant impact on infrastructural development, staff development and industrial peace in Olabisi Onabanjo University. It is therefore recommended that the Federal Government should step up efforts to ensure that tertiary institutions (federal and state owned) are adequately funded through TET FUND so that staff salaries and other staff related matters which have been a major source of industrial conflict and disharmony is addressed.