In Craft Freemasonry, sometimes known as Blue Lodge Freemasonry, every Masonic lodge elects or appoints Masonic lodge officers to execute the necessary functions of the lodge's life and work. The precise list of such offices may vary between the jurisdictions of different Grand Lodges, although certain factors are common to all, and others are usual in most.

All of the lodges in a given nation, state, or region are united under the authority of a Grand Lodge sovereign to its own jurisdiction. Most of the lodge offices listed below have equivalent offices in the Grand Lodge, but with the addition of the word "Grand" somewhere in the title. For example, every lodge has an officer called the "Junior Warden", whilst the Grand Lodge has a "Grand Junior Warden" (sometimes "Junior Grand Warden"). A very small number of offices may exist only at the Grand Lodge level – such offices are included at the end of this article.

There are few universal rules common to all Grand Lodge jurisdictions of Freemasonry (see Masonic Landmarks for accepted universal principles of regular Freemasonry). However, the structure of the progressive offices is very nearly universal. While the precise hierarchy or order of various officers within the "line" of officers may vary, the usual progression is for a lodge officer to spend either one or two years in each position, advancing through "the chairs", until he is elected as Worshipful Master. In addition, there are some offices that are traditionally not considered to be part of the "line", and which may be held by the same brother for many years, or may be reserved for Past Masters.

The process of naming officers within Masonic lodges, rooted in centuries-old traditions, varies significantly across the globe. However, a common and widely practiced method is through merit-based selection and election, for some other Lodges, a progressive line is in use.

A Masonic lodge typically consists of a dedicated group of officers responsible for the smooth operation and governance of the lodge. The highest-ranking officer, often referred to as the "Worshipful Master", plays a central role in this structure. In lodges that follow the merit-based appointment system, officers express their preferences for specific positions they aspire to hold in the coming year. The Worshipful Master then reviews these choices and considers the merits of each candidate. The appointment decisions are based on factors such as the candidate's dedication, knowledge, experience, and past contributions to the lodge.

The officers of a Masonic lodge, aside from the Worshipful Master, can include a Senior Warden, Junior Warden, Treasurer, Secretary, Senior Deacon, Junior Deacon, and other positions, depending on the lodge's specific organizational structure. These officers work in collaboration to ensure the lodge's rituals and activities run smoothly.

In addition to appointed positions, Masonic lodges often feature elected positions where the brethren have the opportunity to choose their leaders through a democratic process. Any qualified brother who wishes to stand for an elected position, such as Senior Warden or Junior Warden, notifies the lodge's secretary of their intent. These positions are typically regarded as critical, as they play a pivotal role in the governance of the lodge and the execution of its rituals.

The election of officers is a crucial event in the Masonic calendar. On the designated election night, the names of the candidates are read aloud, and the members in attendance participate in a democratic vote. The criteria for evaluating candidates may include their contributions to the lodge, knowledge of Masonic principles, and their capacity to lead and support the brethren. The candidate who garners the most votes for a particular position is elected to that office.