| Biwako-Hamaotsu Station | |
| Native Name: | びわ湖浜大津駅 |
| Native Name Lang: | ja |
| Address: | 3-8, Hamaotsu Itchome, Ōtsu-shi, Shiga-ken 520-0047 |
| Country: | Japan |
| Coordinates: | 35.0114°N 135.8638°W |
| Operator: | 20px Keihan Electric Railway |
| Platforms: | 2 island platforms |
| Code: | OT12 |
| Opened: | July 15, 1880 |
| Former: | Ōtsu (until 1913); Hamaōtsu (until 2018) |
| Passengers: | July 15, 1880 daily (boarding) |
| Pass Year: | FY2018 |
| Map Type: | Japan Shiga Prefecture#Japan |
| Map Dot Label: | Biwako-Hamaōtsu Station |
is a junction passenger railway station located in the city of Ōtsu, Shiga Prefecture, Japan, operated by the private railway company Keihan Electric Railway.
Biwako-Hamaōtsu Station is a station of the Ishiyama Sakamoto Line, and is 6.7 kilometers from the terminus of the line at . It is also a station of the Keihan Keishin Line, and is 7.5 kilometers from the terminus of that line at .
The station consists of two island platforms connected by an elevated station building.
Biwako-Hamaōtsu Station was opened on July 15, 1880 as on the Japanese Government Railways (JGR) Tōkaidō Main Line . The private Ōtsu Electric Railway began operations to the station in 1913, the same year that the Tōkaidō Main Line was rerouted to bypass this station and JGR operations ceased. The station was renamed on June 1, 1913. It was renamed again to its present name on March 17, 2018.
In fiscal 2018, the station was used by an average of 3008 passengers daily (boarding passengers only).[1]