Хаджжи: почетный титул совершивших хадж в Мекку

Honorific title given to Muslim who completed the Hajj to Mecca

Hajji (الحجّي; sometimes spelled Hadji, Haji, Alhaji, Al Hadj, Al Haj or El Hajj) is an honorific title which is given to a Muslim person who has successfully completed the Hajj to Mecca. Stemming from the same origin is the term Hadži, used by Orthodox Christians in some Balkan countries, which denotes people who have gone on pilgrimage to the Church of the Holy Sepulchre in Jerusalem.

Hajji is derived from the Arabic , which is the active participle of the verb ("to make the pilgrimage"). The alternative form is derived from the name of the Hajj with the adjectival suffix ī, and this was the form adopted by non Arabic languages.

Hajji and its variant spellings are used as honorific titles for Muslims who have successfully completed the Hajj to Mecca. In Arab countries, and (pronunciation varies by Arabic dialect) is a commonly used manner of addressing any older person respectfully, regardless of whether or not the person in question has actually performed the pilgrimage. It is often used to refer to an elder, since it can take years to accumulate the wealth to fund the travel (particularly before commercial air travel), and in many Muslim societies to a respected man as an honorific title. The title is prefixed to a person's name; for example, Saif Gani becomes "Hajji Saif Gani". In Malay speaking countries, Haji and Hajah are titles given to Muslim males and females respectively who have performed the pilgrimage. These are abbreviated as Hj. and Hjh. (in Indonesian, it is H. and Hj.) In Iran, the honorific title Haj (حاج) is sometimes used for IRGC commanders, instead of the title Sardar ("General"), such as for Qasem Soleimani.

The term was borrowed in Balkan Christian countries formerly under Ottoman rule (Bulgaria, Serbia, Greece, Montenegro, North Macedonia and Romania), and are used for Christians who have travelled to Jerusalem and the Holy Lands. In some areas the title has been fossilised as a family name, for example in the surnames common among Bosniaks such as Hadžić, Hadžiosmanović ("son of Hajji Osman") etc. In Cyprus, the title is so prevalent that it has also been permanently integrated into some Greek Christian surnames, such as Hajiioannou. This is due to Cyprus' long history of Christian and Muslim influence. The title has also been used in some Jewish communities to honor those who made a pilgrimage to Jerusalem or other holy sites in Israel.

In the 21st century, American soldiers began using the term Haji as slang for Iraqis, Afghans, or Arab people in general. It is used in the way "gook" or "Charlie" was used by U. S military personnel during the Vietnam War.