The present invention generally relates to concentrated natamycin suspension formulations for inhibition of fungal growth. Specifically, the present invention relates to stable suspension concentrate formulations comprising from about 25% to about 48% w/w natamycin, from about 0.1% to about 10% w/w of an anionic surfactant selected from the group consisting of polyelectrolyte polymers, modified styrene acrylic polymers, dioctyl sodium sulfosuccinates, sodium salts of naphthalene sulfonates, and combinations thereof, and water. The formulations of the present invention contain natamycin as particles which are on average less than 11 microns in diameter and the formulations have a viscosity of less than 1400 centipoise at 21 degrees Celsius.