American soccer writing, history & data.
| Club | From | To |
|---|---|---|
| R. J. Leacock Supply Co. | 1904 | 1905 |
| Racine City | 1913 | 1915 |
| Racine S.C. | 1952 | 1996 |
| Raleigh Capital Express | 1993 | 2000 |
| Raleigh Wings | 1998 | 2000 |
| Rangers | 1905 | 1907 |
| Rangers F.C. | 1911 | 1921 |
| Rawlings | 1903 | 1905 |
| Reading United A.C. | 1996 | None |
| Real Santa Barbara S.C. | 1989 | 1990 |
| Red Bull New York | 1996 | None |
| Red Star F.C. | 1894 | 1894 |
| Reisterstown | 1948 | 1949 |
| Reliance | 1921 | 1922 |
| Rhode Island Rays | 1994 | 2004 |
| Rhode Island Stingrays | 1994 | 2009 |
| Richmond Kickers | 1993 | None |
| Riverdale | 1917 | 1918 |
| Roanoke RiverDawgs | 1995 | 1996 |
| Roanoke Wrath | 1997 | 2000 |
| Robert Burns F.C. | 1906 | 1907 |
| Robins Dry Dock & Repair Co. F.C. | 1918 | 1921 |
| Rochester Flash | 1981 | 1984 |
| Rochester Lancers | 1967 | 1980 |
| Rochester New York FC | 1996 | None |
| Rochester Ravens | 1996 | 2012 |
| Rockford Raptors FC | 1994 | None |
| Roma Sport Club | 1955 | None |
| Root's Restaurant | 1951 | 1952 |
| Ruggiero's Cafe S.C. | 1943 | 1946 |
| Rustless Iron and Steel Corp. | 1942 | 1943 |