Margaretha Sofia Zweygberg (née Tilén; 10 July 1828 — 19 November 1883) was a Finnish textile wholesaler.

[2] In 1868 Zweygberg founded her own retail company for Tampere-produced yarn and cotton[1][2] in Viipuri market hall.

[2] The company and the selection grew rapidly due to her effective and skillful management.

[1] After Zweygberg's death in 1883, the company was continued by her son-in-law Viktor Ferdinand Grönroos.

Following to his death, the company management went to the widow Sofia Grönroos, Zweygberg's daughter.