The premises of this doctoral dissertation is investigating the role played by national culture on corporate financial choices and outcomes. The investigation is done through three empirical essays. The first essay analyzes the influence of national culture on firms' capital structure choices. The second essay is analyzing the role played by national culture on firms extending more or less trade credit from pre-to-post the mortgage financial crisis. The third essay analyzes the influence of national culture on firms' market value. Furthermore, a chapter of theoretical conceptualization is done to fit these empirical essays work into a mathematical topology framework. This doctoral dissertation work finds itself at the junction of three broad sets of research bodies. These are the literature around the New Institutional Economics (NIE), the finance literature, and the social economics literature. We glue these literature sets together through the general mathematical topology framework to structure our culture and finance research. Chapter 2 introduces these literature sets and describes the foundations of our three essays.Chapter 3 (essay one) presents the analysis of the links between national culture and firms financing choices leading to their capital structure. Chapter 4 (essay two) presents the analysis of culture's influence on firm's choice of extending higher or lower trade credit from pre-to-post the 2008 mortgage financial crisis. Chapter 5 (essay three) presents how firms' financial value maybe influenced national cultural values.National culture is defined as the firm's country-of-origin cultural values. We represent it by four of Hofstede (1980, 2001) six cultural dimensions of individualism, masculinity, uncertainty avoidance, and long-term orientation. Hofstede national culture dimensions are largely applied in the growing culture and finance literature, thus providing strong empirically validity. Our choice of Hofstede dimensions are described in chapter 2.We apply these cultural dimensions in our three essays. Our empirical analysis is build following the New Institutional Economics framework (Williamson, 2000). This framework is the key structure around which we are able to build the theoretical bodies of our three essays. NIE has popularized the understanding and acceptance of the non-financial constraints -in macro-and-micro economics- of the social embeddedness level of culture. We empirically test the hypotheses in our three essays following Williamson NIE framework. The empirical tests are done on samples of listed firms from over 30 countries. These tests provide a broad applicability of our results to firms in the globalized economy. The results of our three essays meet our hypotheses expectations of culture's influence on firms' financial choices and outcomes.The results provide all stakeholders a lens to view and analyze corporate financial choices and outcomes through firms' national culture values. Indeed, the financial numbers one may read may have different meaning depending on firm's country-of-origin cultural values. This understanding would have multiple implications for investors, creditors, managers, shareholders, and policy makers. It may help them in their investing, lending, financing, returns expectations, and policy design to optimize their profits.