Pinoy Big Brother: 737 – Part 1

The first part of Pinoy Big Brother: 737 began on June 20, 2015, and ended on August 8, 2015, lasting 50 days. This was part of the tenth year season of Big Brother in the Philippines. It was hosted by Toni Gonzaga, Bianca Gonzales, Robi Domingo and Enchong Dee. The show aired on ABS-CBN. at 10:00 p.m. (PST) every Mondays to Sundays.

The first batch of housemates that entered on Day 1 were teen housemates. 11 teens entered the house. The median age of this batch was 15 years old. An eviction was held every week where one housemate was evicted, until the seventh week, where two housemates were evicted. One housemate opted for a voluntary exit. On Day 50, the four finalists of this batch exited the House. On Day 84, one housemate from this batch crossed over to another batch of housemates. On Day 99, during It's Showtime, the four finalists were instructed to return to the House. On Day 133, after Zeus Collins was evicted, voting for the winner of this batch opened. On Day 141, Franco Rodriguez and Bailey May were named third and fourth placers, respectively. On the same day, voting for the remaining two housemates re-opened to determine the winner for this batch.

Jimboy Martin emerged as the winner for this batch.