The Mariani surname
In the 2010 U.S. Census, 4,573 people carried this name — #7,287 among all U.S. surnames, about 1 in every 64,500 people counted. That is up 11% from 4,117 in 2000.
What the name means
The meaning of the Mariani surname
A surname originating as a patronymic.
Patronymic surname from the personal name Mariano.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Mariani» (Italian), by Wiktionary contributors · licensed CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0) · excerpt, lightly adapted.
In Argentina’s national register
At least 5,296 people named Mariani live in Argentina.
RENAPER only publishes a name in a province when more than ten people there share it, so the real number is higher. Most of them live in Buenos Aires Province.
Where it concentrates, on the mapWhere they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In France’s civil register
France’s register of deaths holds 2,327 people named Mariani.
364 of them were born outside France. Those born in France came from 79 départements, most often Corsica.
Where it concentrates, on the mapWhere they were born
Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.
In Switzerland’s population statistics
453 people named Mariani live in Switzerland.
They live in 16 of Switzerland’s 26 cantons, most of all in Zurich.
Where it concentrates, on the mapWhere they live today
Swiss Federal Statistical Office (FSO), «Surnames of the permanent resident population by canton», 2025, opendata.swiss/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
In Belgium’s population register
At least 58 people named Mariani live in Belgium.
Statbel only publishes a name in a municipality when five or more people there share it, so the real number is higher. Most of them live in Liège.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
In the Nordic population registers
23 people named Mariani is counted in Sweden.
Sweden’s figure is from 31 December 2022, the last count Statistics Sweden published.
Counted, by country
Own calculations based on data from Statistics Sweden (SCB), surnames with at least two bearers, 31 December 2022 — CC BY 4.0 (names with 20 or more bearers shown).
In print
Mariani in American newspapers,
1894–1908.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 9,111 pages in all carry the name.
Who carried it
People named Mariani,
with a public archive behind them.
-
Camillo Mariani 1567–1611 · architect -
Giovanni Lorenzo Mariani 1722–1793 · composer -
Livio Mariani 1793–1855 · politician -
Rosa Mariani 1799–1864 · opera singer -
Louis-Thomas Mariani 1815–1890 · politician
Wikidata and Wikimedia Commons (CC0) · 202 lives in all are documented under this name.
Nearby in the index
Surnames next to Mariani.
- Margot 122 · U.S. census
- Margraff 157 · U.S. census
- Mari 1,546 · U.S. census
- Maria 4,500 · U.S. census
- Mariage 103 · U.S. census
- Marian 838 · U.S. census
- Mariano 9,091 · U.S. census
- Marias 234 · U.S. census
- Maric 496 · U.S. census
- Marical 147 · U.S. census
- Marichal 541 · U.S. census
- Marie 2,812 · U.S. census
When the index is not enough
This page says where Mariani is.
A volume says what happened to it.
Every page in the index is free and stays free. The Heritage Volume is the long form: the full paper trail, the arms, the crossing — bound, and yours.