His only wife was Eve.

Gen 2:21-25

21 So the LORD God caused a deep sleep to fall upon the man, and he slept; then He took one of his ribs, and closed up the flesh at that place.

22 And the LORD God fashioned into a woman the rib which He had taken from the man, and brought her to the man.

23 And the man said, "This is now bone of my bones, And flesh of my flesh; She shall be called Woman, Because she was taken out of Man."

24 For this cause a man shall leave his father and his mother, and shall cleave to his wife; and they shall become one flesh.

25 And the man and his wife were both naked and were not ashamed.
NASB

Gen 3:20

20 Now the man called his wife's name Eve , because she was the mother of all the living.
NASB