In this letter, we propose a cross-view down/up-sampling (CDU) method for the framework of reduced resolution multiview depth video coding, which exploits cross-view information to assist the up-sampling at the decoder. In the down-sampling procedure of CDU, the odd-even interlaced extraction is employed to preserve more confident information of the original depth video with reduced resolution. In the decoder, the cross-view information is exploited for up-sampling the reconstructed depth video. An iterative interpolation process is proposed to eliminate the effect of compression distortion on this up-sampling. Experimental results demonstrate the gains of up to 3.88 dB for the proposed algorithm and better quality of synthesized views.