Can bacteria, viruses, and cancer cells be destroyed by resonance?
Your question included "other forms of waves" so I'm going to assume that the use of ultrasound to destroy cancer cells qualifies.

A paper published in the British Journal of Cancer in 2009: "[High-intensity-focused-ultrasound in the treatment of primary prostate cancer: the first UK series]"1 describes the use of a "Sonablate 500" device used to treat 172 men with prostate cancers at two hospitals in the UK, and its use is described as resulting in "acceptable short-term levels of cancer control."

However, the paper does lament the deficiencies of research in this area, the number of other treatments available, and the lack of longer-term follow-up to this research.

The answer to your question appears to be yes, with the qualification that this is an example using sound waves, rather than electromagnetic waves - isn't radiotherapy, mentioned in the first sentence of the question, electromagnetic waves?