Stage 4
Stage 4 may refer to:

Key Stage 4
Stage 4 of Everywhere at the End of Time
Cambrian Stage 4
Stage 4 cancer
Stage 4 CKD
Dual-Stage 4-Grid
Stage 4 of Braak staging
Decomposition stage 4
Whale fall stage 4
2019–20 Biathlon World Cup – Stage 4
2021 Call of Duty League season stage 4

See also
Piaget's 4 stages of cognitive development