Vollrath Sebastian Adolf Wilhelm Tham (3 December 1913 – 28 January 1995) was a Swedish Army officer.

[2][1] Tham was commissioned as an officer in 1936 with the rank of second lieutenant and was assigned to Svea Artillery Regiment.

When the Winter War in Finland broke out in November 1939, Tham joined the Swedish Volunteer Corps as a fire control officer.

He was present at the time when regimental comrade Lieutenant Colonel Magnus Dyrssen was killed.

[1] After completing military service, Tham ran his own engineering firm for oil sanitation issues.