Here's the top 50 as of the end of 2005: This also includes when the Orioles was the St. Louis Browns from 1902 to 1953. BALTIMORE ORIOLES SEASON HOMERUNS YEAR HR 1 Brady Anderson 1996 50 2 Frank Robinson 1966 49 3 Jim Gentile 1961 46 4 Rafael Palmeiro 1998 43 T5 Rafael Palmeiro 1996 39 T5 Ken Williams 1922 39 T5 Rafael Palmeiro 1995 39 T5 Boog Powell 1964 39 9 Rafael Palmeiro 1997 38 T10 Boog Powell 1969 37 T10 Albert Belle 1999 37 T12 Ken Singleton 1979 35 T12 Boog Powell 1970 35 T14 Boog Powell 1966 34 T14 Cal Ripken 1991 34 T14 Miguel Tejada 2004 34 T14 Harlond Clift 1938 34 T18 Eddie Murray 1983 33 T18 Jim Gentile 1962 33 T20 Frank Robinson 1969 32 T20 Eddie Murray 1980 32 T20 Eddie Murray 1982 32 T23 Eddie Murray 1985 31 T23 Larry Sheets 1987 31 T23 Tony Batista 2002 31 T26 Frank Robinson 1967 30 T26 Goose Goslin 1930 30 T26 Eddie Murray 1987 30 T26 Gus Triandos 1958 30 T30 Chris Hoiles 1993 29 T30 Harlond Clift 1937 29 T30 Ken Williams 1923 29 T30 Eddie Murray 1984 29 T34 Jay Gibbons 2002 28 T34 Frank Robinson 1971 28 T34 Doug DeCinces 1978 28 T34 Bobby Bonilla 1996 28 T34 Brooks Robinson 1964 28 T34 B.J. Surhoff 1999 28 T34 Eric Davis 1998 28 T34 Cal Ripken 1982 28 T34 Mike Young 1985 28 T34 Eddie Murray 1988 28 T44 Eddie Murray 1978 27 T44 Reggie Jackson 1976 27 T44 Cal Ripken 1987 27 T44 Lee May 1977 27 T44 Melvin Mora 2004 27 T44 Melvin Mora 2005 27 T44 Cal Ripken 1984 27 T44 Eddie Murray 1977 27 T44 Cal Ripken 1983 27 T44 Jeff Heath 1947 27 T44 Chet Laabs 1942 27