ORAC (published by the Seveners; UK)
ORAC 90
ORAC'S MESSAGE/A KNIGHTLY MEMORY
ORBIT #1 (fiction zine of Liberator Popular Front; UK, 1982.10)
ORBIT #2 (UK, 1983.4)
ORBIT #3 (UK, 1983.9)
ORBIT #4 (UK, 1984.3)
ORBIT #5 (UK, 1985.1)
ORBIT #6 (UK)
ORBIT #7 (UK)
ORBIT #8 (UK)
ORBIT #9 (UK)
ORBIT #10 (UK)
ORION'S APPROACH #1 (all-B7 issue of mm zine; UK, 1984)
THE OTHER SIDE OF THE COIN (Jean Airey and Ruth Berman, with Laurie Haldeman)
[Out of the Night (Annita Smith) see BLAKE'S DOUBLES #1]
OUTLANDS #1 (not the same as US mm zine of same name; fiction zine of Blake's Seven Swap and Buy Club; UK)
OVERLOAD (UK, early 80s?)