Titles by Poul Anderson marked with tag: aliens
- 1990 - Inconstant Star
- 1988 - The Man-Kzin Wars with Dean Ing and Larry Niven
- 1986 - Iron
- 1979 - The Ways of Love
- 1978 - Hunter's Moon
- 1978 - The Avatar
- 1975 - A Knight of Ghosts and Shadows
- 1973 - Lodestar
- 1971 - A Little Knowledge
- 1971 - The Queen of Air and Darkness
- 1968 - Peek! I See You!
- 1965 - Marque and Reprisal
- 1960 - The Martyr
- 1960 - The Word to Space
- 1959 - Sister Planet
- 1958 - War of the Wing-Men
- 1956 - Details
- 1955 - The Soldier from the Stars
- 1953 - When Half-Gods Go
- 1952 - Captive of the Centaurianess
- 1950 - The Helping Hand