Boris Strugatsky

Noon Universe (with Arkady Strugatsky)
   Noon (1962)
   Far Rainbow (1967)
   The Waves Extinguish the Wind (1968)
     aka The Time Wanderers
   Hard To Be a God (1973)
   The Snail on the Slope (1980)
   Beetle in an Anthill (1981)
   Escape Attempt (1982)

   The Country of Crimson Clouds (1959) (with Arkady Strugatsky)
   Six Matches (1960) (with Arkady Strugatsky)
   Space Apprentice (1962) (with Arkady Strugatsky)
   Tale of the Troika (1968) (with Arkady Strugatsky)
   The Ugly Swans (1972) (with Arkady Strugatsky)
   The Doomed City (1975) (with Arkady Strugatsky)
   The Final Circle of Paradise (1976) (with Arkady Strugatsky)
   Prisoners of Power (1977) (with Arkady Strugatsky)
   Monday Starts on Saturday (1977) (with Arkady Strugatsky)
     aka Monday Begins on Saturday
   Definitely Maybe (1978) (with Arkady Strugatsky)
     aka One Billion Years to the End of the World
   Roadside Picnic (1978) (with Arkady Strugatsky)
   The Dead Mountaineer's Inn (2015) (with Arkady Strugatsky)
   Lame Fate (Ugly Swans) (2020) (with Arkady Strugatsky)

   The Heart of the Serpent (1958) (with others)
   The Second Marxian Invasion (1968) (with Arkady Strugatsky)
     aka The Second Invasion from Mars
   Aliens, Travelers, and Other Strangers (1984) (with Arkady Strugatsky)
   Stalkers of the infinite (1991) (with Arkady Strugatsky)