Sienkiewicz was born in Wola Okrzejska, a village in eastern Poland's Podlasie region, that was part of the Russian Empire at the time. His was an impoverished gentry family, on his father's side deriving from Tartars who had settled in Lithuania. His family used the coat of arms Oszyk. His parents were Józef Sienkiewicz (1813—1896) and Stefania (née Cieciszowska), 1820—1873). Wola Okrzejska belonged to the writer's maternal grandmother, Felicjana Cieciszowska. He was baptized in the neighbouring village of Okrzeja in a church founded by his great-grandmother. His family moved several times and in the end settled in Warsaw in 1861.

In 1858, Henryk began secondary school in Warsaw. He did not receive very good grades but he was good at liberal arts. Because of the hard financial times at that time, the nineteen-year-old Sienkiewicz took up a job as a tutor in the Weyher family in P?o?sk. During this period he probably wrote his first novel, Ofiara (Victim). He also worked on his publicized novel Na marne (In Vain). In addition, he finished his extramural classes in secondary school and in 1866 received the secondary school diploma. According to his parents' wishes, he passed the examination to the medical department at Warsaw University. After some time, he resigned and took up law studies. He ended up transferring to the Institute of Philology and History where he acquired a thorough knowledge of literature and Old Polish. In 1867 he made his first attempts in literature and wrote a rhyming piece Sielanka M?odo?ci, which he submitted for publication in Tygodnik Ilustrowany (Illustrated Weekly) but it was rejected. In 1869 Sienkiewicz debuted as a journalist. Przegl?d Tygodniowy (The Weekly Review) printed his review of a play, and Tygodnik Ilustrowany printed his essay about Miko?aj S?p-Sarzy?ski. Sienkiewicz also wrote for Gazeta Polska (The Polish Gazette) and Niwa under the pen name "Litwos". In 1873 he started to write a column "Bez tytu?u" ("Without a Title") in Gazeta Polska and in 1875 the series called "Chwila obecna" ("The Present Moment"). From 1874 he took care of the literary section of Niwa.

He wrote the novel Na marne (In Vain, 1871) and then Humoreski z teki Woroszy??y, Stary S?uga (The Old Servant, 1875), Hania (1876) and Selim Mirza (1877). The last three works are referred to as the Little Trilogy. Sienkiewicz also visited his relative Jadwiga ?uszczewska (known as "Deotyma") and the actress Helena Modrzejewska, as their dinner parties were very popular.

In 1876 he went to the United States with Helena Modrzejewska. He stayed for some time in California. During this period he wrote Listy z podró?y (Letters From a Journey), which were published in Gazeta Polska and received wide recognition. He also wrote Szkice w?glem (Sketches in Charcoal) in 1877. The trip to the USA inspired him to write the following works: Komedia z pomy?ek (A Comedy of Errors, 1878), Przez stepy (1879), W krainie z?ota (1880), Za chlebem (For Bread, 1880), Latarnik (Lighthouse Keeper, 1881) Wspomnienia z Maripozy (1882), and Sachem (1883).

In 1878 Henryk Sienkiewicz returned to Europe. First, he stayed in London and then went to Paris for a year. In France he had got a chance to familiarize himself with naturalism, a new trend in literature. In the article "Z Pary?a" ("From Paris"), written in 1879, he expressed a positive opinion on this trend. He stated that, "For a novel naturalism was in fact a brilliant, indispensable and perhaps the only step forward." Two years later he changed his mind and became more critical about this movement. He expressed his opinions on naturalism and writing in general in the following published works: O naturali?mie w powie?ci (Naturalism in the Novel, 1881), O powie?ci historycznej (Historical novel, 1889), and Listy o Zoli (Letters about Zola, 1893).

His stay in America and his letter-writing published in Polish newspapers resulted in national recognition and interest. Boles?aw Prus in his article entitled "", published in Kurier Warszawski in 1880, nicely showed the popularity of the writer. "As he was back from America, almost every lady took tall and handsome men for Sienkiewicz.(...) Finally, when I noticed that every man has got hair like Sienkiewicz and all of the young men, one by one, grow a royal beard and try to have a statuesque and swarthy face, I realised that I wanted to meet him personally.(...) From the corner where I sit, I can see that the room is almost exclusively crowded with the fair sex. Some men, who were there to amuse ladies or to write reports, spent so much time in the company of women that they started to talk in the feminine.In 1879 in Lviv, Sienkiewicz gave a lecture entitled Z Nowego Jorku do Kalifornii. In 1880 at the Bazar hotel in Pozna? he read his novel Za chlebem, and later in Warsaw he read two works on naturalism in literature. In Szczawnica, on his way back to Lviv in 1879, he read a work about his stay in America. This was also the place where he saw his future wife, Maria Szetkiewicz, for the first time. When he discovered that the whole Szetkiewicz family was going to Venice, Sienkiewicz went there too and met Maria personally and they got married on 18 August 1881, on Theatre Square in a church which was a property of the Community of Canonesses (the church no longer exists). They had two children, Henryk Józef and Jadwiga Maria. The marriage did not last long, however, because Maria died on 18 August 1885. In 1882 he worked with S?owo (a daily newspaper with a tendency to conservatism and nobility). In the beginning, he was the editor-in-chief. He also wrote a drama Na jedn? kart? which was later staged in Lviv and Warsaw (1879—1881)

In 1880 Sienkiewicz wrote a historical novella, Niewola tatarska (Tartar Captivity), and began work on another historical novel, Ogniem i Mieczem (With Fire and Sword). In a letter of February 1, 1884, to Stanis?aw Smolka, editor of the Kraków newspaper Czas, Sienkiewicz wrote: "With regard to the great novel, it will probably be titled Wilcze gniazdo (The Wolf's Nest). It takes place during the reign of King Jan Kazimierz, during the Cossack revolt." The novel Wilcze gniazdo appeared in installments in S?owo from May 2, 1883, to March 1, 1884, under the title Ogniem i mieczem (With Fire and Sword). It also ran simultaneously in the Kraków newspaper, Czas.

With Fire and Sword was enthusiastically received by readers (as were the next two volumes of the Trilogy) and won national recognition for the author . Many readers wrote to Sienkiewicz, asking about the next adventures of their favorite characters. In 1879 a street in Zbarazh (one of the settings in With Fire and Sword) was named after Sienkiewicz; in 1900 its citizens would not permit building works on the church grounds, believing that it was the place where Pan Podbipi?ta (a fictional character in With Fire and Sword) was buried. The novel was also adapted for the stage. In 1884 Jacek Malczewski exhibited tableaux vivants inspired by With Fire and Sword. The novel also garnered some criticism. It was pointed out, not without reason, that some of the historical facts and events were misrepresented and distorted.

He began writing the second volume of his Trilogy — Potop ("The Deluge"); according to Sienkiewicz the title was supposed to indicate the deluge of masses of people trying to stop the Swedish invasion. Potop was printed in S?owo (from 23 December 1884 to 2 September 1886). The novel quickly became a best-seller and it established Sienkiewicz's position in society. While Sienkiewicz was writing Potop, his wife, Maria Szetkiewicz, died of tuberculosis so it was a difficult time for the writer. After Maria's death, Sienkiewicz went to Constantinople (through Bucharest and Varna) from where he was writing reports. After his return to Warsaw the third volume of the Trilogy, Pan Wo?odyjowski (Fire in the Steppe) appeared. The novel was published in S?owo from May 1887 to May 1888.

The Trilogy made Henryk Sienkiewicz the most widely read and known Polish novelist. Stefan ?eromski wrote in his Diaries: "In the Sandomierz area I witnessed myself that everybody, even those who usually do not read, were asking about The Deluge." Sienkiewicz was given 15 thousand roubles in recognition of his achievements from an unknown admirer who signed himself as Micha? Wo?odyjowski (the name of the character in the Trilogy). Sienkiewicz used this money to open the scholarship fund (named after his wife) designed for artists endangered by tuberculosis.

In 1888 Sienkiewicz went to Spain. In 1890 he involved himself in organizing the Mickiewicz Year. At the end of 1890 he went to Africa which resulted in the writing of Listy z Afryki (Letters from Africa). In 1891 a book edition of the novel Bez dogmatu (Without Dogma) was published. Earlier, from 1889 to 1890, the novel was printed in installments in S?owo. In 1892 Sienkiewicz signed an agreement for another novel - Rodzina Po?anieckich (Children of the Soil), and the book came out in print in 1895. In the summer of 1894 in Zakopane, Sienkiewicz introduced some fragments of his new novel Krzy?acy (The Teutonic Knights, or "The Knights of the Cross").

In 1893 Sienkiewicz began preparations for his next novel, Quo Vadis. The period at the turn of the 1880s and 1890s was associated with intensive work on several novels. Maria Romanowska, the stepdaughter of a wealthy Odessan named Wo?odkowicz, entered the writer's life and Sienkiewicz and Romanowska became engaged in that city. Their wedding took place on November 11, 1893, but the bride soon left the author and Sienkiewicz obtained papal consent to dissolution of the marriage.

In February 1895 Sienkiewicz wrote the first chapters of Quo Vadis, for which he had been gathering materials since 1893. The novel started appearing in print in March 1895 in several Polish newspapers: in Gazeta Polska in Warsaw, Czas in Cracow and in Dziennik Pozna?ski in Pozna? (Greater Poland region). It stopped appearing at the end of February 1896. The book edition then appeared very quickly. The novel gained recognition and became extremely popular all over Europe. It was translated into many languages, including Arabic and Japanese. The popularity of Quo Vadis at that time was supported by the fact that the horses competing in Grand Prix de Paris were given names of the characters from the book. The novel was repeatedly adapted and put on the stage. There was also an opera made on the basis of the book. In 1913 Quo Vadis was screened and the novel was filmed several more times.[1] ]]In 1900 Sienkiewicz celebrated an anniversary of his artistic work. On the occasion the Polish people presented him with an estate at Obl?gorek and he went on to open a school for children there. In the same year the Jagiellonian University awarded Sienkiewicz an honorary doctorate.

Sienkiewicz involved himself in social matters. In 1901 he made an appeal in a cause of children in Wrze?nia. In 1906 he called on his fellow countrymen in the USA to help starving people in the Kingdom of Poland. In 1904 he married his niece, Maria Babska.

In 1905 he won a Nobel Prize for lifetime achievement as an epic writer. It is often erroneously said that Sienkiewicz received his Nobel Prize for Quo vadis. He actually received it "for his outstanding merits as an epic writer" although Quo vadis perhaps brought him the widest international recognition. Gazeta.pl : Error 404 at miasta.gazeta.pl In the acceptance speech Sienkiewicz said that this honour was particularly valuable for a son of Poland, saying "She was pronounced dead - yet here is a proof that She lives on". He also added, "She was pronounced defeated - and here is proof that She is victorious".He wrote a novel, Na polu chwa?y (On the Field of Glory), that was intended as the beginning of a trilogy. In 1910 his novel for young people, W pustyni i w puszczy (In Desert and Wilderness) appeared in installments in the newspaper, Kurier Warszawski.

After the outbreak of World War I, Sienkiewicz left for Switzerland. Together with Ignacy Paderewski he established the Vevey Swiss General Committee to Aid Victims of the War. He died on November 15, 1916, in Vevey, where he was buried. In 1924, after Poland had regained its independence, the writer's ashes were repatriated to Warsaw, Poland, and placed in the crypt of St. John's Cathedral.

Sienkiewicz was a knight of the French Légion d'honneur.