The best-selling album of 1973 in Japan is 女のみち by SHIRO MIYA (宮史郎).
Rank Artist Album Released
1
SHIRO MIYA (宮史郎)
女のみち
1972
2
CHERISH (チェリッシュ)
スーパー・デラックス
1973
3
THE BEATLES
1962 - 1966
1973
4
TAKURO YOSHIDA (吉田 拓郎)
元気です
1972
5
CARPENTERS
NOW AND THEN
1973
6
THE BEATLES
1967 - 1970
1973
7
THE BEATLES
LET IT BE
1970
8
KAGUYAHIME (かぐや姫)
かぐや姫さあど
1973
9
YOSUI INOUE (井上 陽水)
YOSUI LIVE
1973
10
MICHEL POLNAREFF
GOLD DISK(JAPAN ONLY)
1972
Source: Oricon Charts