The exponential growth of the Internet and mobile phone usage in sub-Saharan Africa (SSA) within the last decade has created many different platforms for citizens' political participation. This appears to be changing the political landscape of most countries within the region as governments are increasingly held responsible for their actions. However, researchers endure an acute lack of knowledge in information technology (IT) research areas such as e-democracy and e-government that focus on the sub-Saharan African region. This study applies the Theory of Planned Behavior (TPB) to enhance the theoretical understanding of the determinants of e-democracy adoption across the culture of sub-Saharan African (SSA) countries. The researcher proposed a model that draws upon the TPB to relate individuals' inherent behavioral intentions and attitudes to environmental enabler/barriers to e-democracy adoption in SSA. The researcher conducted a systematic literature review of 158 peer-reviewed e-democracy articles, exploring the breadth of research on e-democracy, reviewing the current theoretical knowledge, and identifying critical research gaps. This review guided the researcher in developing a conceptual framework that identifies relevant constructs from the theories and hypothesizes their relationships in determining e-democracy adoption in SSA. In an effort to align the theory more closely with the empirical reality, the researcher used a quantitative broad-based survey that solicited information at the individual level of analysis from randomly selected SSA countries. Data was analyzed through a Structural Equation Modeling (SEM) technique using Partial Least Square (PLS) algorithms. Empirical results validate the long-standing notion that the adoption of e-democracy depends primarily on an individual's behavioral intentions to engage in e-democratic activities. The results render support for most of the proposed hypotheses emphasizing the role of information and communication technologies (ICTs) policies and infrastructure on e-democracy adoption. This study's major contribution is to incorporate Hofstede's (2001) cultural dimension--individualism/collectivism, power distance, and uncertainty avoidance--with the Theory of Planned Behavior (TPB) in studying e-democracy adoption. The researcher argued that the unique culture of SSA countries influenced the proposed e-democracy adoption model and moderates its key relationships. Finally, the researcher discussed the study's implications for theory and practice, concluding with several suggestions for future research and policy recommendations. [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/en-US/products/dissertations/individuals.shtml.]