Yokosuka Arts Theatre (横須賀芸術劇場, Yokosuka Geijutsu Gekijō) is part of the mixed-use Bay Square complex in Yokosuka, Kanagawa Prefecture, Japan.

It opened in 1994.

The horseshoe-shaped theatre seats 1,806 and there is a smaller hall, the Yokosuka Bayside Pocket, with a capacity of 600.

The Bay Square complex is by Kenzo Tange, with acoustical design of the halls by Nagata Acoustics.

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