We report on photoluminescence of ${\mathrm{Sr}}_2{\mathrm{P}}_2{\mathrm{O}}_7:{\mathrm{Bi}}^{2+}$ as a potential red-emitting phosphor for multichromatic light sources. If excited with blue light, photoluminescence of this compound spans the spectral range of about 600 to $760\mathrm{nm}$ . Static and dynamic spectral data reveal the presence of two distinct emission centers. Based on bond covalency and emission lifetime, luminescence can clearly be assigned to ${\mathrm{Bi}}^{2+}$ ions on $\mathrm{Sr}(1)$ and $\mathrm{Sr}(2)$ lattice sites, respectively. Energy transfer is observed from $\mathrm{Bi}(1)$ to $\mathrm{Bi}(2)$ . Transfer efficiency, estimated from the lifetimes of the excited states, increases with increasing dopant concentration.