The issues relating to the global warming, air pollution, and energy security have been one of the most important public policy issues nowadays and with the increasing global population, food security has also become a major public policy issue. The development of algal biofuels as a third-generation biofuel has been considered as a major solution for these global problems. Although there have been many reviews on the use of the marine algae in energy, medicine, and health care and there been a number of scientometric studies on the algal biofuels, there has not been any study on the citation classics in the algal photosynthesis, biosorption, biotechnology, and biofuels as in other research fields. As North's New Institutional Theory suggests, it is important to have up-to-date information about the current public policy issues to develop a set of viable solutions to satisfy the needs of all the key stakeholders. Therefore, a selected set of citation classics in the algal photosynthesis, biosorption, biotechnology, and biofuels are presented in this chapter to inform the key stakeholders about the use of marine algae for the solution of these problems in the long run complementing a number of recent scientometric studies on the biofuels and global energy research.