A total of 129 Celtic players have been capped for Scotland while on the books at Celtic. The following list includes those who were capped ten times or more, while at Celtic. The number in brackets indicates their total number of caps, if you also include those where they were at other clubs. The dates given are the dates for which, while at Celtic, they played for the national team.
NB this data is around a year out of date, so some current players who feature in the national team, possibly should feature but don't.
All links are to the page for that player's Scotland career, where you can further link to their main page.

Paul McStay 1983-97.....................................76
Tom Boyd 1992-2001.................................... 67 (73)
Danny McGrain 1973-82................................ 62
Roy Aitken 1979-80........................................ 50 (57)
Kenny Dalglish 1971-77................................. 47 (102)
Bobby Evans 1948-60.................................... 45 (48)
John Collins 1990-1996.................................. 32 (58)
Paul Lambert 1998-2003................................ 29
Jackie McNamara 1996-2005....................... 30 (33)
Billy McNeill 1961-1972.................................. 29
David Hay 1970-1974......................................24
Jimmy Johnstone 1964-74............................. 23
Tosh McKinlay 1995-98.................................. 23
Bobby Collins 1950-1958............................... 22 (31)
Tommy Gemmell 1966-1971.......................... 18
Rab Doublas 2002-05 ....................................18 (19)
Craig Burley 1997-99 .....................................16 (46)
Alec McNair 1906-1920 .................................15
Duncan macKay 1959-1962 .........................14
Willie McStay 1921-28 ...................................13
John Campbell 1893-1903 ............................12
Jimmy McMenemy 1905-1920 ......................12
Willie Fernie 1954-1958 .................................12
Bobby Murdoch 1965-1969 ............................12
Jimmy Quinn 1905-12 ......................................11
Pat Crerand 1961-62 .....................................11 (16)
Stephen McManus 2006- ................................11
Bobby Lennox 1966-1970 ...............................10
Davie Provan 1979-1982 ................................10
Mo Johnston 1984-87 ......................................10 (38)
Simon Donnelly 1997-98 .................................10