This session welcomes contributions from observational, numerical, analytical, and laboratory studies that explore turbulence, waves, magnetic reconnection, and non-thermal particles in the heliosphere. These phenomena showcase various aspects of nonlinear plasma dynamics and may also be interconnected. Turbulence can create current sheets that heat the plasma and initiate magnetic reconnection. Magnetic reconnection events can alter turbulent energy cascades and accelerate particles. Field-particle interactions can produce non-thermal, non-isotropic particle distributions, leading to instabilities and turbulence. We invite studies addressing these and related phenomena across various space environments, such as the solar corona, solar wind, and Earth's magnetosphere. We welcome contributions examining diverse regimes, including low and high plasma beta, weak and strong turbulence, balanced and imbalanced turbulent cascades, non-relativistic and relativistic dynamics, and fluctuations at hydrodynamic and kinetic scales.