In this chapter the influence of radiation, as well as its interactions with turbulence, on atmospheric pressure turbulent flames is discussed. First laboratory-scale nonluminous jet diffusion flames are presented, and calculations are compared against experimental data. Special attention is given to how radiation influences flame structure, and what additional effects are due to turbulence interactions. This is followed by how radiation interacts with artificial, scaled-up flames. Similarly, radiation and TRI in small as well as scaled luminous diffusion flames and pool fires are presented. Finally, the influence of radiation on pulverized coal and oxy-fuel systems is investigated.