The Fourier transform infrared spectrum of theυ3andυ9bands of methylene fluoride-d2(CD2F2) has been recorded with an unapodized resolution of 0.0024cm-1in the frequency range 970-1080cm-1. These two bands with band centres approximately 26 cm-1apart were mutually coupled by Coriolis interactions. By fitting a total of 1639 infrared transitions of bothυ3andυ9with a standard deviation of 0.00084cm-1S/S using a Watson'sA-reduced Hamiltonian in theIrrepresentation with the inclusion of a first orderc-type Coriolis resonance term, two sets of rovibrational constants forυ3= 1 andυ9= 1 states were derived. Theυ3band isB-type while theυ9 band isA-type with band centres at 1030.1573 ± 0.0003 and 1003.7435 ± 0.0001cm-1, respectively.