O dan y cynllun, sy'n cael ei weinyddu gan yr elusen amgylcheddol annibynnol Keep Britain Tidy, bydd y cwmnïau gwm cnoi yn buddsoddi hyd at £10 miliwn dros bum mlynedd.
Under the scheme, administered by independent environmental charity Keep Britain Tidy, the chewing gum firms will invest up to £10 million over five years.