Kagoshima Main Line Yufuin no Mori (ゆふいんの森, The Forest of Yufuin), Yufu DX (ゆふDX), and Yufu (ゆふ) are limited express train services operated by Kyushu Railway Company (JR Kyushu) which run from Hakata via Yufuin to Ōita and Beppu on the Kyudai Main Line.

The exclusive ekiben, Yufuin no Mori Bento, can only be purchased onboard this service.

It contains Yufuin rice and vegetables, sesame tofu, and chicken miso.