| Consort: | yes |
| Princess Anna | |
| Succession: | Princess consort of Lippe |
| Reign: | 26 April 1922 – 30 December 1949 |
| Full Name: | Princess Anna of Ysenburg and Büdingen |
| Spouse: | Count Ernst of Lippe-Weissenfeld Leopold IV, Prince of Lippe |
| Issue: | Princess Eleonore of Lippe-Weissenfeld Armin, Prince of Lippe |
| Royal House: | Ysenburg-Büdingen |
| Father: | Bruno, Prince of Ysenburg and Büdingen |
| Mother: | Countess Bertha of Castell-Rüdenhausen |
| Birth Date: | 10 February 1886 |
| Birth Place: | Büdingen |
| Death Place: | Detmold |
Princess Anna of Ysenburg und Büdingen (10 February 1886, Büdingen – 8 February 1980, Detmold) was the youngest child of Bruno, Prince of Ysenburg and Büdingen and his second wife, Countess Bertha of Castell-Rüdenhausen. Through her second marriage to Leopold IV, Prince of Lippe, Anna was the titular Princess consort of Lippe.
Anna married firstly to Count Ernst of Lippe-Weissenfeld (1870-1914), sixth child and youngest son of Count Franz of Lippe-Weissenfeld (1820-1880) and his wife, Baroness Marie of Beschwitz (1836-1921), daughter of Baron Ferdinand of Beschwitz, on 21 November 1911 at Schloss Büdingen in Büdingen. Anna and Ernst had one daughter before Ernst was killed at Gołdap on the Eastern Front during World War I on 11 September 1914:
∞ Sweder, Count of Rechteren-Limpurg (1910–1972) on 19 May 1935 in Detmold, divorced in 1944
∞ Ingrid Pieksma-Klynstra (born 30 December 1935),[2] mother of Brigitte Klynstra (born 10 January 1959) and grandmother of Prince Hugo de Bourbon de Parme (born 20 January 1997)[3]
∞ Count Hans Günter of Solms-Laubach (born 26 June 1927 in Munich), had two issue
Anna married secondly to Leopold IV, Prince of Lippe, second eldest child of Count Ernst of Lippe-Biesterfeld and his wife, Countess Karoline of Wartensleben, on 26 April 1922 in Büdingen. Anna and Leopold had one son:
∞ Traute Becker (born 16 February 1925 in Hänigsen, near Uetze) on 27 March 1953 in Göttingen
∞ Countess Maria of Solms-Laubach (born 12 August 1968 in Frankfurt am Main) on 13 October 1994, had five issue