The fan culture of Istra 1961 is deeply rooted in the club's history and the Pula community. Their passion is not only visible on the pitch but also felt beyond the stadium's boundaries. Zeleno-bijeli, as they are known, are renowned for their rituals that begin long before the referee's whistle signals the start of the match.

One of the most significant moments for fans is the gathering before the game. In line with tradition, supporters meet in nearby cafes where they exchange stories about past matches, current club events, and strategies for upcoming encounters. These gatherings often conclude with songs, as club scarves and beers adorn the tables, creating a unique atmosphere of camaraderie.

As match time approaches, the Zeleno-bijeli make their way to the stadium, and the journey transforms into a true spectacle. With songs and banners, they create an unforgettable atmosphere that lets the players know they are supported long before they step onto the pitch. The entrance to the stadium, known as the "Grand Entrance", marks the moment when all fans converge and enter their sanctuary together, often with the chant of "Istra! Istra!".

Once in place, the rituals continue. Fans gather around prominent banners with messages of support, while the sound of drums and songs echo throughout the stadium. These rituals are not just entertainment; they are the essence of Zeleno-bijeli's identity. The songs sung during matches often contain historical references to the club, players, and legends, creating a sense of belonging and pride.

The derby against NK Rijeka brings a special excitement among Istra 1961 fans. This match is not just another game; it is a battle for honor, and the atmosphere is charged with energy. In the lead-up to the derby, fans organize special activities, such as group training sessions for songs and choreographies to be performed during the match. This engagement not only strengthens unity among supporters but also motivates players to give their best on the pitch.

At the end of the match, regardless of the outcome, the ritual continues. Winning songs or songs of consolation for defeat resonate, and the sense of community remains. This passion and togetherness make Istra 1961 not just a football club but a movement that connects people from different parts of the world, all united by their love for their team.

Ultimately, the fan culture of Istra 1961 is much more than supporting a team; it is a way of life, a community gathered around a passion for football. These rituals, customs, and traditions ensure that Zeleno-bijeli remain true to their roots while simultaneously building the future of the club with pride and passion.