The regulator has conducted a series of tests of 5G base stations around the country, and Ofcom says radiation levels are actually at "tiny fractions" of safe limits.
An Ofcom spokesman said: "The emissions at each site were a tiny fraction of the maximum levels set out in international guidelines."
The tests revealed that for the 5G band, there was 0.039 percent of the recommended exposure limit.
All four major UK networks have launched 5G over the last 12 months, and that has led to renewed interest in safety issues surrounding the technology.
In fact, Ofcom has said it has been receiving an "increasing number of queries" about 5G.
The regulator added: "Clearly, the deployment of 5G networks and the take-up of 5G services is at an early stage. We will therefore continue to undertake EMF measurements to monitor the overall trends in the long term."
Meanwhile, Public Health England has conceded that adding 5G to the existing technologies could lead to a "small increase in overall exposure to radio waves".
The body added: "However, the overall exposure is expected to remain low relative to guidelines and, as such, there should be no consequences for public health."