三州 Sanshū
参州 Sanshū
三河国 Mikawa province
Relations
| Role | Entry | Location | ||
|---|---|---|---|---|
| Bordering | 美濃国 Mino province | 美濃国 Mino province | ||
| Neighbouring | 尾張国 Owari province | 尾張国 Owari province | ||
| Bordering | 信濃国 Shinano province | 信濃国 Shinano province | ||
| Neighbouring | 遠江国 Tōtōmi province | 遠江国 Tōtōmi province | ||
| Ferry | 志摩国 Shima province | 志摩国 Shima province | ||
| Ferry | 伊勢国 Ise province | 伊勢国 Ise province | ||