* Actual Confessions #13–14 (October–December 1952) (continues from Love Adventures)
* Actual Romances #1–2 (October 1949–January 1950) (continues as True Secrets)
* Adventure into Fear #10–31 (October 1972–December 1975) (continues from Fear)
* Adventure into Mystery #1–8 (May 1956–July 1957)
* Adventure into Terror Volume 1 #43–44 (continues from Joker Comics)
* Adventure into Terror Volume 2 #3–31
* Adventures into Weird Worlds #1–30 (1952–1954)
* All-Select Comics #1–11 (1943–1946) (continues as Blonde Phantom)
* All Surprise #1–12 (1943–1946)
* All Teen Comics #20
* All-True Crime #26–52 (continues from Official True Crime Cases)
* All Western Winners #2–4 (1940s) (continues from All Winners Comics and as Western Winners)
* All Winners Comics Volume 1 #1–19 (1941–?)
* All Winners Comics Volume 2 #1 (1948) (continues as All Western Winners)
* Amazing Adult Fantasy #7–14 (December 1961–July 1962)
* Amazing Adventures (1961 series) #1–6 (June 1961–November 1961)
* Amazing Adventures (1970 series) #1–39 (August 1970–November 1976)
* Amazing Adventures (1981 series) #1–14 (December 1979–November 1981)
* Amazing Adventures (1988 series) #1 (November 1988)
* Amazing Comics #1 (Fall 1944) (continues as Complete Comics)
* Amazing Detective Cases #3–14 (1950–1952)
* Amazing Fantasy #15 (August 1962)
* Amazing Fantasy #16–18 (December 1995–March 1996)
* Amazing High Adventure #1–5 (1984–1987)
* Amazing Scarlet Spider #1–2 (November 1995–December 1995)
* Amazing Spider-Girl #1— (2006— )
* Amazing Spider-Man Volume 1 #1–441, #-1, #500— , Annual #1–28 (1963–1998), (2003— )
* Amazing Spider-Man Volume 2 #1–58 (1999–2003)
* Amazing X-Men #1–4
* Annie Oakley #1–11 (1948–1956)
* Annihilation #1— (2006— )
* Ant-Man #1–4 (February–May 2004)
* Ant-Man's Big Christmas (1999)
* Apache Kid #11–19 (December 1950–April 1956) (continues as Western Gunfighters)
* Apache Skies #1–4 (September–December 2002)
* Archangel #1 (1996)
* Arizona Kid #1–6 (1951–1952)
* Arrgh! #1–5 (1974–1975)
* Arrowhead #1–4 (1954)
* Astonishing #3–63 (continues from Marvel Boy Volume 1)
* Astonishing Tales #1–36 (August 1970–?)
* The Avengers Volume 1 #1–402 (September 1963–1996); (2004) #500–503