The following is a list of all the magazines that are covered by The SF Magazine Index for which the information is (or might be) incomplete.
| Agony in Black | Missing: v2 #1, 2004 |
| Alternate Hilarities | Missing: #1, 199?; #2, 199? |
| Beyond Centauri | Missing: v10 #1, July 2012; v10 #3, January 2013 |
| Black Lotus | Missing: #1, 1992; #3, 1993 |
| Blood Moon Rising | Missing: #1, #2, #3 |
| Blood Samples | Missing: all after #2 |
| ChiZine | Missing: #3, January/March-2000; #42, October/December-2009 |
| Cosmag | Missing: #1, March 1951; #2, May 1951; #3, July 1951 |
| Cover of Darkness | Missing: #13, December 2012 |
| Cthulhu Calls | Missing: v1#1, July 1973; v3 #4, April 1976; v4#1, July 1976; v5#1, July 1977 |
| Cthulhu Sex | Missing: v1 #13; v3 #14 |
| Dagger of the Mind | Missing: #2, 1990? |
| Dark Angel Rising | Missing: all after #4, 2002 |
| The Dark Corner | Missing: #4, 2020 |
| The Darklands Project | Missing: all except #3, January 1998 |
| Dark Regions | Missing: any issues between v2#1 & v3#1 |
| Different | Missing: any in v1 except v1#1; v2#3, v2#5, v2#6; any in v3; v4#3; v4#5; v4#6; v5#1; v5#2; v6#2 |
| The Drabbler | Missing: #3, 2005; #4, 2005; #5, February 2006; #6, 2006; #7, 2006; #8, February 2007; #13, 2009; #14, June 2009; #15, November 2009; #16, April 2010; #17, October 2010; #18, February 2011; #19, September 2011; #20, April 2012; #21, October 2012 |
| Encounters Magazine | Missing: v1 #1, 1988; v1 #2, Spring 1989; v2 #2, October/November 1991 |
| Equinox | Missing: #1, 197?; #2, 197? |
| Fang | Missing: #2, 1992; #4, 199? |
| Fantasque | Missing: Spring 2003; 2004 |
| Fictitious Force | Missing: #4 (2007); #5 (2008); #6 (2009) |
| Flame [1954] | Missing: all except v1 #4, Winter 1954 |
| Frightmares | Missing: #2, 1998 |
| Fungi | Missing: #22, July 2015 |
| Gateways | Missing: #2, April 1992; #3, July 1992; #4, October 1992; #5, Winter 1993; #6, Spring 1993; #7, Summer 1993 |
| Ghostlight | Missing: v2 #1, Spring 2010; v2 #2, Summer 2010; v2 #3, Fall 2010; v3 #1, Fall 2011 |
| Helix | Missing: #10, Fall 2008 |
| Hungur | Missing: v7 #1, #13, All Souls' Night 2011 |
| Inspired Novels | Missing: B-1 to B-4; C-1 to C-4; D-1; any after D-4 |
| Little Green Men | Missing: #2, 1996 |
| Maelstrom Speculative Fiction | Missing: #1, Summer 1998; #2, Fall? 1998 |
| The Magazine of Speculative Poetry | Missing: v1#2, Spring 1985; v6#4, #24, Autumn 2004; v7#2, #26, Autumn 2005; v9#1, #33, Spring 2011; |
| The Mage | Missing: #13, Fall 1990 |
| Magic Realism | Missing: #1, 1990; #2, 1990; #3, 1991 |
| Malevolence | Missing: #1; #2 |
| Millennium Science Fiction & Fantasy Magazine | Missing: April 1996; v1 #1, Summer 1998; v1 #2, Fall 1998; v1 #3, Winter 1998; v2 #4, Winter 1999; v3 #1, Spring 2000; v3 #2, Summer 2000; v3 #3, Fall 2000; v3 #4, Winter 2000 |
| Mind Magazine | Missing: v6 #12, Dec-1932; v7 #5, May-1933; any after v7 #6, Jun-1933 |
| Mindsparks | Missing: #2, 1993 |
| Mount Zion Speculative Fiction Review | Missing: v1 #1, Winter 2005 |
| Mythos Collector | Missing: v1 #3, 2002 |
| Necrotic Tissue | Missing: #10, April 2010; #11, July 2010; #13, January 2011 |
| Night Terrors | Missing: #13, 2004; #14, 2005 |
| Nothing's Sacred | Missing: #1, February 2013 |
| Once Upon a World | Missing: #4, 199? |
| Parchment Symbols | Missing: #9, 2002 |
| Phantom Drift: | Missing: #4, 2014; #6, 2016 |
| Pravic Magazine | Missing: #2, Spring 2013; #5, June 2014 |
| Rare Constellations | Missing: #1, July 1993 |
| Realms | Missing: v1 #1, 1989 |
| Red Eft | Missing: #1, July 1994 |
| Red Planet Earth | Missing: #3, 1974; #5, 1974 |
| The Rejected Quarterly | Missing: v5 #1, #17, Winter/Spring 2008; v5 #2, #18, Summer/Fall 2008; v5 #3, #19, Winter/Spring 2009; v5 #4, #20, Summer/Fall 2009; v6 #1, #21, Winter/Spring/Summer 2010 |
| The Sasquatch Have Their Ways | Missing: #2, June 1993; any after #2 |
| Science Fiction Digest [1951] | Missing: #1; #2 |
| Shelter of Daylight | Missing: #4, Autumn 2010 |
| Singularities | Missing: Spring 2000 |
| Sounds of the Night | Missing: #7, August 2010 |
| Strange Horizons | Missing: all after 28-Jan-2013 |
| Terror Time Again | Missing: #1, 1988; #2, 1989; any after #3 |
| A Theater of Blood | Missing: #1, all after #5 |
| Thrills & Chills | Missing: #8, 1995; #9, 1995; any after #20, 1996 |
| The Ultimate Unknown | Missing: #12, Summer 1998 |
| Werewolf Magazine | Missing: #7, 2007; #8, 2008 |
| Wildside | Missing: #1 |
| Worlds Lost...Time Forgotten | Missing: #1, 1980 |
| Yearnings | Missing: #4, 198? |
| The Alien Has Landed | Missing: #1, 1996?; #2, 1996? |
| Amazing Stories (UK) | Missing: all issues before Nov-1946 |
| Anduril | Missing: preview issue Mar-1972; #2, Summer 1972 |
| Colonies Science Fiction Magazine | Missing: #1, 2000 |
| Dynamic Science Stories (UK) | Missing: all issues |
| Ethereal Tales | Missing: #4, July 2009; #5, October 2009; #7, April 2010; #8, July 2010; #9, October 2010; #11, April 2011; #12, September 2011 |
| Fear | Missing: #39, New Year 2017 |
| Nocturne | Missing: #4, 2006; #4.5, 2007; #5, 2007; #6, 2007; #7, 2007; #8, 2008; #9, 2008 |
| Omni (UK) [1978] | Missing: all issues |
| The Satellite | Missing: v1 #3, December 1938 |
| Squane's Journal | Missing: #1, 1996? |
| String | Missing: #1, 1991 |
| Threads | Missing: #2, January 1994 |
| Worlds of the Unknown | Missing: #4, 2016; #5, 2017 |
| Andromeda Spaceways Magazine | Missing: #72, September 2018 |
| Astounding Science Fiction (Australia) | Missing: all except June 1944; August 1944; October 1947; December 1947; October 1950; February 1952; February 1953; August 1957; February 1959; January 1960; March 1960; April 1960 |
| Daarke Worlde | Missing: #1, 1992?; #2, 1992/3? |
| Dynamic Science Fiction (New Zealand) | Missing: all except #3 |
| Masque Noir | Missing: #7, 2003? |
| Nebula Science Fiction (Australia) | Missing: all issues |
| Nebula Science Fiction (New Zealand) | Missing: all issues |
| New Worlds Science Fiction (New Zealand) | Missing: all issues |
| Planet Stories (Australia) | Missing: all issues |
| Planet Stories (New Zealand) | Missing: any issues before #7; #8 |
| Redsine (online) | Missing: #1, August 2000; #2, October 2000; #4, February 2001; #6, June 2001 |
| Ripples Magazine | Missing: all issues after #14, 2009 |
| Science Fantasy (New Zealand) | Missing: all issues |
| Science Fiction Adventures (Australia) | Missing: all issues |
| Science Fiction Adventures (New Zealand) | Missing: all issues |
| Startling Stories (Australia) | Missing: all issues |
| Startling Stories (New Zealand) | Missing: any before #13; #15; #17 |
| Super Science Stories (Australia) | Missing: all except #1, #5, #7, #10 |
| Super Science Stories (New Zealand) | Missing: all issues |
| Thrilling Wonder Stories (Australia) | Missing: all issues |
| Thrilling Wonder Stories (New Zealand) | Missing: #103 |
| Under Magellanic Clouds | Missing: all issues |
| Unknown Worlds (Australia & New Zealand) | Missing: all issues |
| Venture Science Fiction (Australia) | Missing: all except Jan-1954; Mar-1954 |
| Venture Science Fiction (New Zealand) | Missing: all issues |
| Amazing Stories (Canada) | Missing: all except May 1935 & August 1935 |
| A. Merritt's Fantasy Magazine (Canada) | Missing: all except v1 #1, December 1949 |
| Astounding Stories (Canada) | Missing: all issues |
| Authentic Science Fiction (Canada) | Missing: v1 #43, 1954; v1 #44, 1954 |
| Famous Fantastic Mysteries (Canada) | Missing: all issues |
| Fantastic Novels Magazine (Canada) | Missing: all except v2 #3, September 1948 & v4 #6, April 1951 |
| Fantastic Story Quarterly (Canada) | Missing: all except v1 #2, Summer 1950 & v1 #3, Fall 1950 |
| Imelod | Missing: #4; #5; #6; #10; #14; #16 |
| Irregular Quarterly | Missing: #2, Spring 2007 |
| Macabre | Missing: Jun-1948 |
| New Worlds Science Fiction (Canada) | Missing: all all except September 1954 & September 1962 |
| Parsec | Missing: v1#2, Oct/Nov-1995; v1#3, Dec-1995/Jan-1996; v2#1, Spring 1997; v2#6, Summer 1998; v3#1, Winter 1998/9; v3#2, Spring/Summer 1999; v3#3, Summer/Fall 1999 |
| Planet Stories (Canada) | Missing: v4 # 1, Winter 1948; v4 # 3, Summer 1949; v4 # 5, Winter 1949; v4 # 6, Spring 1950; v4 # 7, Summer 1950; v4 # 9, November 1950; v4 #10, January 1951; v4 #11, March 1951 |
| Science Fantasy (Canada) | Missing: all except #44, December 1960/January 1961; #45, February/March 1961; #50, December 1961/January 1962; #52, April/May 1962; #54, August/September 1962; #55, October/November 1962; #56, November/December 1962; #57, 57, January/February 1963; #58, March/April 1963 |
| Science Fiction Adventures (Canada) | Missing: all except #16, September/October 1960; #17, November/December 1960; #20, May/June 1961; #21, July/August 1961; #22, September/October 1961; #24, January/February 1962; #25, March/April 1962; #28, September/October 1962; #29, November/December 1962; #30, January/February 1963; #31, March/April 1963; |
| Stardock | Missing: #6, Winter 1986 |
| Startling Stories (Canada) | Missing: all except May 1948 |
| Super Science Stories (Canada) | Missing: v5 #4, September 1949; v6 #4, May 1950; v7 #1, July 1950 |
| Tales of Moreauvia | Missing: v1 #4, 2012 |
| Thrilling Wonder Stories (Canada) | Missing: all except v27 #2, Summer 1945; v32 #3, August 1948; v37 #3, February 1951 |
| Timewarp | Missing: #1, 1985 |
| Weird Tales (Canada) | Missing: June 1935 to June 1936 (except September 1935 and February 1936); all issues after March 1948 |
| Wonder Story Annual (Canada) | Missing: all issues |