Ohio State Route 725
|Maintained by ODOT|
|Length:||48.08 mi (77.38 km)|
|Existed:||1938 – present|
|West end:||SR 44 at the Indiana state line|
| US 127 in Camden
I-75 in Miamisburg
I-675 in Miamisburg
|East end:||US 42 near Spring Valley|
|Counties:||Preble, Montgomery, Greene|
State Route 725 (SR 725, Ohio 725) is an east–west state highway in the southwestern portion of the U.S. state of Ohio. Its western terminus is at the Indiana state line approximately 9 miles (14 km) west of Camden at the eastern terminus of Indiana State Road 44; and its eastern terminus is at U.S. Route 42 just south of Spring Valley.
- 1938 – Original route certified.
- 1972 – Miamisburg to Interstate 75 upgraded to divided highway.
- 1997 – Interstate 675 to Centerville upgraded to divided highway.
Major intersections 
||0.00||0.00||SR 44||Western terminus at Indiana state line|
||Germantown||22.46||36.15||SR 4 south||Southern end of SR 4 concurrency|
|24.01||38.64||SR 4 north||Northern end of SR 4 concurrency|
|Miamisburg||30.36||48.86||I-75 – Cincinnati, Dayton|
|31.94||51.40||I-675 – Cincinnati, Columbus|
|Centerville||34.38||55.33||SR 48 south||Southern end of SR 48 concurrency|
|35.45||57.05||SR 48 north||Northern end of OH 48 concurrency|
||Spring Valley||42.85||68.96||US 42||Eastern terminus at T-intersection|
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