Johannes Sillenberg (29 September 1890 Puurmani Parish (now Põltsamaa Parish), Kreis Dorpat – 27 June 1978) was an Estonian politician.
He was a member of II Riigikogu.
He was a member of the Riigikogu since 17 May 1924, representing the Workers' United Front.
On 4 June 1924, he resigned his position and he was replaced by Gustav Lange.
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