1894-1902 - Toledo & Maumee Valley Railway Co.
1902-1924 - Maumee Valley Railways & Light Co.
Interurban line:
Toledo-Waterville (completed 1901)
Abandoned 1924
1900-1901 - Findlay Street Railway Co.
1901-1930 - Toledo Bowling Green & Southern Traction Co.
Interurban line:
Toledo-Findlay (completed 1902)
Abandoned 1930
Local service: Findlay
1901-1930 - Toledo Fostoria & Findlay Railway Co.
1930-1932 - Western Ohio Railway & Power Co.
Interurban lines:
Toledo-Pemberville (constructed 1908, discontinued 1930)
Pemberville-Fostoria (constructed 1905, discontinued 1930)
Fostoria-Findlay (constructed 1901, discontinued 1932)
1903-1910 - Toledo & Indiana Railway Co.
1910-1911 - Toledo & Indiana Traction Co.
1911-1939 - Toledo & Indiana Railroad Co.
Interurban line:
Toledo-Bryan (completed 1905)
Abandoned 1939
1904-1912 - Toledo Port Clinton & Lakeside Railway Co.
1912-1924 - Northwestern Ohio Railway & Power Co.
1924-1939 - Ohio Public Service Co.
Interurban line:
Toledo-Marblehead (completed 1906)
Abandoned 1939
Replacement bus companies:
Port Clinton Coach Lines (until 1948)
Buckeye Stages (1948-1957)
1901-1906 - Toledo & Western Railway Co.
1906-1921 - Toledo & Western Railroad Co.
1921-1933 - Toledo & Western Railway Co.
Interurban lines:
Toledo-Adrian (constructed 1901)
Toledo-Fayette (constructed 1902)
Fayette-Pioneer (constructed 1903)
Abandoned 1933