Purpose: The aim of the study was to analyze the impact of gender stereotypes on career advancement in STEM fields in Tanzania. Methodology: This study adopted a desk methodology. A desk study research design is commonly known as secondary data collection. This is basically collecting data from existing resources preferably because of its low cost advantage as compared to a field research. Our current study looked into already published studies and reports as the data was easily accessed through online journals and libraries. Findings: In Tanzania, gender stereotypes significantly impede career advancement for women in STEM fields, creating barriers to their professional growth and development. Research reveals that societal expectations and cultural biases often undervalue women’s contributions and limit their opportunities for advancement. Women face challenges such as unequal access to resources, mentorship, and networking opportunities compared to their male counterparts. These stereotypes contribute to lower representation of women in leadership positions within STEM sectors, further perpetuating gender disparities. Unique Contribution to Theory, Practice and Policy: Social role theory, stereotype threat theory & expectancy-value theory may be used to anchor future studies on impact of gender stereotypes on career advancement in STEM fields in Tanzania. Establish mentorship programs that pair LGBTQ+ individuals with supportive mentors who can provide guidance and advocacy. Implement and enforce policies that promote diversity and inclusion in hiring and promotion practices within STEM fields.