A Han Jian is a traditional Chinese sword that originated during the Han Dynasty (206 BC – 220 AD). It is also known as the "Han Dynasty Sword" or "Han Dynasty Jian." The Han Jian is a double-edged straight sword characterized by its slender and lightweight design. It typically has a straight blade with a diamond-shaped cross-section and a sharp point. The blade is usually made of high-quality steel and can vary in length, typically ranging from 70 to 90 centimeters (27 to 35 inches).

The Han Jian is renowned for its balance and maneuverability, making it an ideal weapon for both cut and thrust techniques. Its design emphasizes speed and precision over raw power. The handle of the Han Jian often features a circular or hexagonal pommel and a guard that curves towards the blade. Some variations may have ornate decorations on the hilt or scabbard, showcasing the craftsmanship and artistic traditions of ancient China.

Historically, the Han Jian was favored by military officers, nobles, and martial artists due to its effectiveness in combat and its association with status and prestige. It was often seen as a symbol of martial prowess and refined culture. Today, the Han Jian continues to hold significance in Chinese martial arts and is sometimes used in traditional ceremonies, demonstrations, and reenactments.