Therese Grob (16 November 1798 – 17 March 1875) was the first love of the composer Franz Schubert. The composer's friend Anselm Hüttenbrenner recalled — twenty-six years after Schubert's death — a conversation in which Schubert had said "I loved someone very dearly and she loved me too … . For three years she hoped I would marry her; but I could not find a position which would have provided for us both."
Therese Grob was the daughter of Heinrich Grob and Theresia Männer (died 22 August 1826). She was born in Lichtental, Vienna, Archduchy of Austria. There was one other child, a boy called Heinrich (1800–1855) who was two years younger than Therese. The father died on 6 April 1804. The widowed mother continued to run the small silk-weaving business that Heinrich Senior had established. The premises were very near to Schubert's home. Therese had an attractive soprano voice, and the young Heinrich was a talented pianist and violinist. The two families grew close through music-making.
Therese sang in the Lichtental parish church, which Schubert had been attending since he was a child. For the church's centenary celebrations, the young Schubert completed his first mass in late July 1814 — the Mass in F, D.105 — and Therese sang the soprano solo at the premiere performance, which Schubert conducted himself. Schubert assembled an album of songs for Therese's brother Heinrich, the last of which is dated 1816.
A Marriage Consent Law enforced by Metternich expressly forbade marriages by men in Schubert's class if they could not verify their ability to support a family. Schubert's application in April 1816, eventually rejected, for the post of music teacher at a teachers' training college in Laibach (now Ljubljana, Slovenia) may have been in part driven by his awareness to gain some financial security to make marriage to Therese possible.
On 21 November 1820 Therese married Johann Bergmann (24 June 1797 – 1875), a baker. Together they had four children: Theresia (1821–1894), Johann Baptist (1822–1875), Amalia (9 July 1824 – 24 December 1886) and Carolina (b. 1828). Schubert himself never married. Eight years after the composer's death, on 14 September 1836, Schubert's brother Ignaz married Therese's aunt Wilhelmine.