Triglyceride-rich lipoproteins (TRL)-related biomarkers, including TRL-cholesterol (TRL-C), remnant-like lipoprotein particles cholesterol (RLP-C) and apolipoprotein C-III (apoC-III), have been associated with atherosclerosis. However, their prognostic values have not been fully determined, especially in patients with previous coronary artery disease (CAD). This study aimed to examine the associations of TRL-C, RLP-C and apoC-III with incident cardiovascular events (CVEs) in the setting of secondary prevention of CAD. Plasma TRL-C, RLP-C and total apoC-III were directly measured. A total of 4355 participants with angiographically confirmed CAD were followed-up for the occurrence of CVEs. During a median follow-up period of 5.1 (IQR: 3.9-6.4) years, 543 (12.5%) events occurred. Patients with incident CVEs had significantly higher levels of TRL-C, RLP-C and apoC-III than those without events. Multivariable Cox analysis indicated that a log unit increase in TRL-C, RLP-C and apoC-III increased the risk of CVEs by 49% (95%CI: 1.16-1.93), 21% (95%CI: 1.09-1.35) and 40% (95%CI: 1.11-1.77), respectively. High TRL-C, RLP-C and apoC-III were also independent predictors of CVEs in individuals with low-density lipoprotein cholesterol levels ≤1.8 mmol/L (n=1068). The addition of RLP-C level to a prediction model resulted in a significant increase in discrimination and all three TRL biomarkers improved risk reclassification. Thus, TRL-C, RLP-C, and apoC-III levels were independently associated with incident CVEs in Chinese CAD patients undergoing statin therapy..