Organizations, places, companies or other things that ended or were established in Thailand, which was known as Siam until 1939, in the 20th century.
| 19th c. ← Disestablishments in Thailand in the 20th century → 21st c. |
| 1900s disestablishments in Siam – 1901 • 1902 • 1903 • 1904 • 1905 • 1906 • 1907 • 1908 • 1909 |
| 1910s disestablishments in Siam – 1910 • 1911 • 1912 • 1913 • 1914 • 1915 • 1916 • 1917 • 1918 • 1919 |
| 1920s disestablishments in Siam – 1920 • 1921 • 1922 • 1923 • 1924 • 1925 • 1926 • 1927 • 1928 • 1929 |
| 1930s disestablishments in Thailand – 1930 • 1931 • 1932 • 1933 • 1934 • 1935 • 1936 • 1937 • 1938 • 1939 |
| 1940s disestablishments in Thailand – 1940 • 1941 • 1942 • 1943 • 1944 • 1945 • 1946 • 1947 • 1948 • 1949 |
| 1950s disestablishments in Thailand – 1950 • 1951 • 1952 • 1953 • 1954 • 1955 • 1956 • 1957 • 1958 • 1959 |
| 1960s disestablishments in Thailand – 1960 • 1961 • 1962 • 1963 • 1964 • 1965 • 1966 • 1967 • 1968 • 1969 |
| 1970s disestablishments in Thailand – 1970 • 1971 • 1972 • 1973 • 1974 • 1975 • 1976 • 1977 • 1978 • 1979 |
| 1980s disestablishments in Thailand – 1980 • 1981 • 1982 • 1983 • 1984 • 1985 • 1986 • 1987 • 1988 • 1989 |
| 1990s disestablishments in Thailand – 1990 • 1991 • 1992 • 1993 • 1994 • 1995 • 1996 • 1997 • 1998 • 1999 |
| 2000s disestablishments in Thailand – 2000 |
Subcategories
This category has the following 8 subcategories, out of 8 total.